Purpose of an optical filter is to (1) reflect lights of different colours (2) dispense light into component colours (3) refract light of different colours (4) transmit or absorb light of different colours

Purpose of an optical filter is to (1) reflect lights of different colours (2) dispense light into component colours (3) refract light of different colours (4) transmit or absorb light of different colours
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 transmit or absorb light of different colours
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Purpose of an optical filter is to – (1) reflect lights of different colours (2) dispense light into component colours (3) refract light of different colours (4) transmit or absorb light of different colours

Description : Purpose of an optical filter is to – (1) reflect lights of different colours (2) dispense light into component colours (3) refract light of different colours (4) transmit or absorb light of different colours

Last Answer : (4) transmit or absorb light of different colours Explanation: Optical filters are devices that selectively transmit light in a particular range of wavelengths, that is, colors, while ... as absorptive filters), fluorescence microscopy, spectroscopy, clinical chemistry, colour stage lighting, etc.

A black body does not __________ radiation. (A) Absorb or emit (B) Refract (C) Reflect (D) Both (B) & (C)

Description : A black body does not __________ radiation. (A) Absorb or emit (B) Refract (C) Reflect (D) Both (B) & (C)

Last Answer : (D) Both (B) & (C)

White clothes are cooler than black ones because they – (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Description : White clothes are cooler than black ones because they – (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Last Answer : (2) reflect all the light that reaches them Explanation: The coolness and warmth associated with clothes is because of their reflective or absorptive capacities. White clothes are good reflectors of light, thereby keeping the body cool. The opposite is the case with black clothes.

White clothes are cooler than black ones because they (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Description : White clothes are cooler than black ones because they (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Last Answer : reflect all the light that reaches them

Antireflection coating is helps in which case of the following? A. Minimizing the reflection of light from top surface B. To absorb and control the amount of light entering into the medium C. To allow maximum light to reflect from top surface D. To allow minimum light to enter into the medium

Description : Antireflection coating is helps in which case of the following? A. Minimizing the reflection of light from top surface B. To absorb and control the amount of light entering into the medium C. To allow maximum light to reflect from top surface D. To allow minimum light to enter into the medium

Last Answer : A. Minimizing the reflection of light from top surface

Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth

Description : Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth

Last Answer : (3) Reflect back the heat given by earth Explanation: It is because the night side of Earth will radiate infra-red radiation (heat) back into space. When there is cloud cover, the clouds act like a blanket and trap the heat close to the ground just like a blanket traps heat close to our body.

Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Description : Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Last Answer : reflect back the heat given by earth

Light colours absorb less heat therefore these are not heated as much as the black colour.

Description : Light colours absorb less heat therefore these are not heated as much as the black colour.

Last Answer : Ans: Dark colours do not exactly absorb more heat, but they do convert a higher percentage of light into heat. In the sun with a dark coloured shirt it gets hot, where a lighter ... and converted into heat. White objects reflect all visible light, where black objects absorb all visible light.

The sky appears blue because – (1) All colours interfere to produce blue (2) In white light, the blue component dominates (3) The atmosphere scatters blue colour more than the others (4) It is actually blue

Description : The sky appears blue because – (1) All colours interfere to produce blue (2) In white light, the blue component dominates (3) The atmosphere scatters blue colour more than the others (4) It is actually blue

Last Answer : (3) The atmosphere scatters blue colour more than the others Explanation: Diffuse sky radiation is solar radiation reaching the Earth's surface after having been scattered from the direct solar beam by ... the atmosphere (approximately 25% of the incident radiation when the sun is high in the Sky.

The sky appears blue because (1) all colours interfere to produce blue (2) in white light, the blue component dominates (3) the atmosphere scatters blue colour more than the others (4) it is actually blue

Description : The sky appears blue because (1) all colours interfere to produce blue (2) in white light, the blue component dominates (3) the atmosphere scatters blue colour more than the others (4) it is actually blue

Last Answer : the atmosphere scatters blue colour more than the others

What are every day objects that reflect all the colours in sunlight?

Description : What are every day objects that reflect all the colours in sunlight?

Last Answer : What is the answer ?

Lights of different colours are arranged below in order of increasing wavelengths: 1. Violet, indigo, blue 2. Green, orange, red 3. Red, green, indigo 4. Blue, green, yellow Which of the above are in proper sequence? (a) 1 only (b) 1 and 2 (c) 2 and 3 (d) 1 and 4

Description : Lights of different colours are arranged below in order of increasing wavelengths: 1. Violet, indigo, blue 2. Green, orange, red 3. Red, green, indigo 4. Blue, green, yellow Which of the above are in proper sequence? (a) 1 only (b) 1 and 2 (c) 2 and 3 (d) 1 and 4

Last Answer : Ans:(d)

What are the meanings of different colours of the annunciator lights in cockpit?

Description : What are the meanings of different colours of the annunciator lights in cockpit?

Last Answer : RED: It indicates a failure in the system that requires immediate attention and action of the crew. AMBER: It indicates a failure or malfunction of a system that requires crew awareness, ... operation of a back up system. BLUE: It indicates normal operation of a temporarily used system.

Does acrylic absorb or transmit high intensities from electromagnetic frequencies?

Description : Does acrylic absorb or transmit high intensities from electromagnetic frequencies?

Last Answer : answer:Depends what colour it is .. That is what colour is. The electromagnetic spectrum is broad. Some waves are many times the size of buildings, others are tinier than atoms. A small ... it to reflect/absorb different wavelengths (frequencies) of the visible region is how the colour is created

Sodium vapour lamps glow with yellow colour. This is due to - (1) sublimation of sodium to emit yellow colour (2) the emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum (3) the low ionisation energy of sodium (4) its ability to absorb all other colours except yellow

Description : Sodium vapour lamps glow with yellow colour. This is due to - (1) sublimation of sodium to emit yellow colour (2) the emission of excess energy absorbed by sodium atoms, in the yellow region of the ... (3) the low ionisation energy of sodium (4) its ability to absorb all other colours except yellow

Last Answer : (2) the emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum Explanation: Sodium Vapour Lamps glow with yellow colour due to the emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum.

Sodium vapour lamps glow with yellow colour. This is due to (1) sublimation of sodium to emit yellow colour (2) the emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum (3) the low ionisation energy of sodium (4) its ability to absorb all other colours except yellow

Description : Sodium vapour lamps glow with yellow colour. This is due to (1) sublimation of sodium to emit yellow colour (2) the emission of excess energy absorbed by sodium atoms, in the yellow region of the ... (3) the low ionisation energy of sodium (4) its ability to absorb all other colours except yellow

Last Answer : the emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum

When Water and air are two materials that refract light true or false?

Description : When Water and air are two materials that refract light true or false?

Last Answer : Need answer

Function of iris is to (a) move lens forward and backward (b) refract light rays (c) bring about movements of eye lids (d) alter the size of pupil.

Description : Function of iris is to (a) move lens forward and backward (b) refract light rays (c) bring about movements of eye lids (d) alter the size of pupil.

Last Answer : (d) alter the size of pupil.

When a light ray travelling in glass is incident on an air surface, A. it will refract away from the normal B. some of the light may be reflected C. all of the light may be reflected D. two of A, B, and C E. all of A, B, and C

Description : When a light ray travelling in glass is incident on an air surface, A. it will refract away from the normal B. some of the light may be reflected C. all of the light may be reflected D. two of A, B, and C E. all of A, B, and C

Last Answer : E. all of A, B, and C

Which of the following is used to split white light into different colours? (1) Glass slab (2) Convex lens (3) Concave lens (4) Prism

Description : Which of the following is used to split white light into different colours? (1) Glass slab (2) Convex lens (3) Concave lens (4) Prism

Last Answer : (4) Prism Explanation: In optics, a prism is a transparent optical element with flat, polished surfaces that refract light. At least two of the flat surfaces must have an angle between them. The ... a triangular base and rectangular sides, and in colloquial use "prism" usually refers to this type.

Which of the following is used to split white light into different colours ? (1) Glass slab (2) Convex lens (3) Concave lens (4) Prism

Description : Which of the following is used to split white light into different colours ? (1) Glass slab (2) Convex lens (3) Concave lens (4) Prism

Last Answer : Prism

The sky appears blue because – (1) All colours interfere to produce blue (2) In white light, the blue component dominates (3) The atmosphere scatters blue colour more than the others (4) It is actually blue

Description : The sky appears blue because – (1) All colours interfere to produce blue (2) In white light, the blue component dominates (3) The atmosphere scatters blue colour more than the others (4) It is actually blue

Last Answer : (3) The atmosphere scatters blue colour more than the others Explanation: Diffuse sky radiation is solar radiation reaching the Earth's surface after having been scattered from the direct solar beam by ... the atmosphere (approximately 25% of the incident radiation when the sun is high in the Sky.

Which component of the protein absorb UV light at 280 nm?

Description : Which component of the protein absorb UV light at 280 nm?

Last Answer : Indole ring of tryptophan.

"Tice splitting of different colours of light in a prism is : (1) Reflection of light (2) Dispersion light (3) Diffraction light (4) Refraction of light

Description : "Tice splitting of different colours of light in a prism is : (1) Reflection of light (2) Dispersion light (3) Diffraction light (4) Refraction of light

Last Answer : (2) Dispersion light Explanation: The refractive index of many materials (such as glass) varies with the wavelength or colour of the light used, a phenomenon known as dispersion. This causes ... a wave depends on its frequency, or alternatively when the group velocity depends on the frequency.

The splitting of different colours of light in a prism is : (1) Reflection of light (2) Disperson of light (3) Diffraction of light (4) Refraction of light

Description : The splitting of different colours of light in a prism is : (1) Reflection of light (2) Disperson of light (3) Diffraction of light (4) Refraction of lights

Last Answer : Disperson of light

The refractive indices for lights of violet, yellow and red colours for a flint glass prism are respectively 1.632, 1.620 and 1.613. Find the dispersi

Description : The refractive indices for lights of violet, yellow and red colours for a flint glass prism are respectively 1.632, 1.620 and 1.613. Find the dispersi

Last Answer : The refractive indices for lights of violet, yellow and red colours for a flint glass prism are ... Find the dispersive power of the prism material.

Which of the following cables can transmit data at high speeds: a) Co - axial cables b) Optical cables c) Both (a) and (b) d) Twisted pair cables e) None of The Above

Description : Which of the following cables can transmit data at high speeds: a) Co - axial cables b) Optical cables c) Both (a) and (b) d) Twisted pair cables e) None of The Above

Last Answer : b) Optical cables

OTDR stands for ∙ a. Optical Time Domain Reflectometer ∙ b. Optical Transmit Direction Return ∙ c. Optical Time Domain Time Regeneration ∙ d. Overtime Direct Reference

Description : OTDR stands for ∙ a. Optical Time Domain Reflectometer ∙ b. Optical Transmit Direction Return ∙ c. Optical Time Domain Time Regeneration ∙ d. Overtime Direct Reference

Last Answer : c. Optical Time Domain Time Regeneration

Which do you like best; Refractr.com, Refract.me, FeedPris.ms, or MeStre.am?

Description : Which do you like best; Refractr.com, Refract.me, FeedPris.ms, or MeStre.am?

Last Answer : Refractr.com – I know the whole ‘er’ shortening thing is as Web2.0 trendy as it gets, but hell, people almost expect it these days. I like this one because it has a nice color/prism/rainbow/spectrum thing, and it can be nouned; “Did you check my Refractr today?”

One of the main function of the earth’s ozone layer is to ? A. Prevent global warming B. Filter out ultraviolet rays (Answer) C. Absorb pollution D. All of the above

Description : One of the main function of the earth’s ozone layer is to ? A. Prevent global warming B. Filter out ultraviolet rays (Answer) C. Absorb pollution D. All of the above

Last Answer : B. Filter out ultraviolet rays (Answer)

Light houses are places with powerful lights to : (1) guide and resolve traffic jams in crowded metrocities during nights. (2) guide and help large crowds at religious gathering during nights. (3) indicate to the incoming warships, the location of a harbour during night. (4) guide and warn the ships coming from different directions in the ocean.

Description : Light houses are places with powerful lights to : (1) guide and resolve traffic jams in crowded metrocities during nights. (2) guide and help large crowds at religious gathering during nights. (3) ... harbour during night. (4) guide and warn the ships coming from different directions in the ocean.

Last Answer : (4) guide and warn the ships coming from different directions in the ocean. Explanation: A lighthouse is a tower, building, or other type of structure designed to emit light from a system of ... coastlines, hazardous shoals, reefs, safe entries to harbors, and can also assist in aerial navigation.

Light houses are places with powerful lights to : (1) guide and resolve traffic jams in crowded metro-cities during nights. (2) guide and help large crowds at religious gathering during nights. (3) indicate to the incoming warships, the location of a harbour during night. (4) guide and warn the ships coming from different directions in the ocean.

Description : Light houses are places with powerful lights to : (1) guide and resolve traffic jams in crowded metro-cities during nights. (2) guide and help large crowds at religious gathering during nights. (3) ... harbour during night. (4) guide and warn the ships coming from different directions in the ocean.

Last Answer : guide and warn the ships coming from different directions in the ocean.

Weather satellites transmit cloud cover and temperature-humidity profiles back to Earth using images of which combination of the electromagnetic radiation types? w) infra-red and visible light x) ultraviolet and nuclear magnetic y) ultraviolet and infra-red z) ultraviolet and visible light

Description : Weather satellites transmit cloud cover and temperature-humidity profiles back to Earth using images of which combination of the electromagnetic radiation types? w) infra-red and visible light x) ultraviolet and nuclear magnetic y) ultraviolet and infra-red z) ultraviolet and visible light

Last Answer : ANSWER: W -- INFRA-RED AND VISIBLE LIGHT

Which component of seed drill is used for transmit power to operate seed dropping mechanism. a) Frame b) Transport wheel c) Seed box d) Covering device

Description : Which component of seed drill is used for transmit power to operate seed dropping mechanism. a) Frame b) Transport wheel c) Seed box d) Covering device

Last Answer : Transport wheel

Sun appears red in colour at sun-rise and sunset due to – (1) the fact that sun emits only red colour at that time (2) red light having longer wave length scatters away (3) that sun Comes out of the mountains (4) that all other colours scatter away except red

Description : Sun appears red in colour at sun-rise and sunset due to – (1) the fact that sun emits only red colour at that time (2) red light having longer wave length scatters away (3) that sun Comes out of the mountains (4) that all other colours scatter away except red

Last Answer : (4) that all other colours scatter away except red Explanation: According to Rayleigh's law, the intensity of scattered light varies inversely as the fourth power of its wavelength. Sunlight consists of ... have to travel a larger part of the atmosphere because they are very close to the horizon.

The blue colour of water in the sea is due to – (1) absorption of other colours except blue by water molecules (2) scattering of blue light by water molecules (3) reflection of blue light by impurities in sea water (4) reflection of blue sky by sea water

Description : The blue colour of water in the sea is due to – (1) absorption of other colours except blue by water molecules (2) scattering of blue light by water molecules (3) reflection of blue light by impurities in sea water (4) reflection of blue sky by sea water

Last Answer : (1) absorption of other colours except blue by water molecules Explanation: Almost all sunlight that enters the ocean is absorbed, except very close to the coast. The red, yellow, and green ... to the absorption and scattering of light. The blue wavelengths of light are scattered, similar to the

A ray of white light strikes the surface of an object. If all the colours are reflected, the surface would appear (1) Black (2) White (3) Grey (4) Opaque

Description : A ray of white light strikes the surface of an object. If all the colours are reflected, the surface would appear (1) Black (2) White (3) Grey (4) Opaque

Last Answer : (2) White Explanation: Objects do not have any colour of their own. When light hits a surface, some of it is absorbed and some of it is reflected. The light that is reflected is ... appear white when they reflect all the wavelengths; they appear black when they absorb all visible wavelengths.

Light waves projected on oil surface show seven colours due to the phenomenon of (1) polarisation (2) refraction (3) reflection (4) interference

Description : Light waves projected on oil surface show seven colours due to the phenomenon of (1) polarisation (2) refraction (3) reflection (4) interference

Last Answer : (4) interference Explanation: In physics, interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude.

A soap bubble shows colours when illuminated with white light. This is due to – (1) Diffraction (2) Polarization (3) Interference (4) Reflection

Description : A soap bubble shows colours when illuminated with white light. This is due to – (1) Diffraction (2) Polarization (3) Interference (4) Reflection

Last Answer : (3) Interference Explanation: The iridescent colours of soap bubbles are caused by interfering of (internally and externally) reflected light waves and are determined by the thickness of the film. This phenomenon ... are the same as the phenomenon causing the colours in an oil slick on a wet road.

Sun appears red in colour at sunrise and sunset due to (1) the fact that sun emits only red colour at that time (2) red light having longer wave length scatters away (3) that sun comes out of the mountains (4) that all other colours scatter away except red

Description : Sun appears red in colour at sunrise and sunset due to (1) the fact that sun emits only red colour at that time (2) red light having longer wave length scatters away (3) that sun comes out of the mountains (4) that all other colours scatter away except red

Last Answer :  that all other colours scatter away except red

The blue colour of water in the sea is due to (1) absorption of other colours except blue by water molecules (2) scattering of blue light by water molecules (3) reflection of blue light by impurities in sea water (4) reflection of blue sky by sea water

Description : The blue colour of water in the sea is due to (1) absorption of other colours except blue by water molecules (2) scattering of blue light by water molecules (3) reflection of blue light by impurities in sea water (4) reflection of blue sky by sea water

Last Answer : absorption of other colours except blue by water molecules

A soap bubble shows colours when illuminated with white light. This is due to (1) Diffraction (2) Polarisation (3) Interference (4) Reflection

Description : A soap bubble shows colours when illuminated with white light. This is due to (1) Diffraction (2) Polarisation (3) Interference (4) Reflection

Last Answer : Interference

Poincare said: “To doubt everything or to believe everything are two equally convenient solutions; both dispense with the necessity of reflection.” Which way do you lean and why?

Description : Poincare said: “To doubt everything or to believe everything are two equally convenient solutions; both dispense with the necessity of reflection.” Which way do you lean and why?

Last Answer : My inclinations lie with yours, but it seems as though what Poincare was getting at is that to give in to either sensibility is to take the easy way out.

What do you think about the fact that many people dispense cigarettes without personal information?

Description : I think a lot of sellers think it’s been past 18 since a lot of 16-year-olds seem more mature. However, if they are not released, a stranger will be sent in and a lot of people will come in. I used to do that by sending my schoolmate who was 18 years old.

Last Answer : Unfortunately, there is nothing you can do about it. : / I'm always asked, for example, even though I'm slowly 24 and sometimes a little annoying, because when I see that those who are much younger than me are not ...: /

How to dispense discharged batteries?

Description : How to recover non-rechargeable pencil batteries?

Last Answer : For a moment, just warm them up. But there is a risk that they will leak, crack, damage the device. For a while you can take the TV driver, they tend to be low.

how to refill Herma Dotto Glue Dispense

Description : how to refill Herma Dotto Glue Dispense

Last Answer : Need Answer

What form of energy is used to dispense the gumballs?

Description : What form of energy is used to dispense the gumballs?

Last Answer : What is the answer ?

Are optometrists allowed to dispense prescriptions for medicine?

Description : Are optometrists allowed to dispense prescriptions for medicine?

Last Answer : Optometrists do have limited prescription privileges. Optometrists received O.D. or Doctor of Optometry degrees from accredited optometry schools rather then medical schools, so they do not have full prescription ... states. For example, if you have pink eye, they can prescribe antibiotic eye drops.

Point out incompatibility (if any) and describe suitable method for its dispense.

Description : Point out incompatibility (if any) and describe suitable method for its dispense.

Last Answer : Rx Quinine sulphate 1.5 gm Dilute sulphuric acid ..4ml Potassium iodide .8gm Water upto 200 ml Prepare mixture, send 100 ml Dil. sulphuric acid is added to dissolve ... and in another bottle potassium iodide and water. Instruct the patient to mix them before the dose actually taken.