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.
Description : The sky appears blue because the earth’s atmosphere _____? A. Scatters blue light B. Transmits blue light C. Reflects blue light D. Has actual blue cover
Last Answer : ANSWER: C
Description : The sky appears blue because the earth’s atmosphere -----? A. Scatters blue light (Answer) B. Reflects blue light C. Transmits blue light D. Has actual blue cover
Last Answer : A. Scatters blue light (Answer)
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.
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
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
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
Description : which of the following statements is not true for scattering of light? (a) Colour of the scattered tight depends on the size of particles of the atmosphere. (b) Red light is least scattered in the ... air scatter the blue, light more strongly than red. So the scattered blue light enters our eyes.
Last Answer : (c) Scattering of light Lakes place as various colours of white light travel with different speed in fir.
Description : In absence of atmosphere, the colour of sky appears (a) blue (b) black (c) red (d) yellow
Last Answer : (b) black
Description : To an astronaut in the spacecraft, the sky colour appears to be (a) Blue (b) White (c) Black (d) Orange red
Last Answer : Ans:(c)
Description : The colour of sky appears blue due to – (1) reflection (2) refraction (3) scattering of shorter wave lengths (4) dispersion
Last Answer : (3) scattering of shorter wave lengths Explanation: The sunlit sky is blue because air scatters short-wavelength light more than longer wavelengths. Since blue light is at the short wavelength end of the ... that the human eye perceives blue when looking toward parts of the sky other than the sun.
Description : The colour of sky appears blue due to (1) reflection (2) refraction (3) scattering of shorter wave lengths (4) dispersion
Last Answer : scattering of shorter wave lengths
Description : A star appears twinkling in the sky because of – (1) scattering of light by atmosphere (2) reflection of light by atmosphere (3) refraction of light by atmosphere (4) diffraction of light by atmosphere
Last Answer : (3) refraction of light by atmosphere Explanation: A star appears twinkling in the sky because of refraction of light, by atmosphere. Light bends when it passes obliquely from one medium to another. This is called refraction of light.
Description : A star appears twinkling in the sky because of (1) scattering of light by atmosphere (2) reflection of light by atmosphere (3) refraction of light by atmosphere (4) diffraction of light by atmosphere
Last Answer : refraction of light by atmosphere
Description : An object which absorbs all colours and reflects none appears: (1) White (2) Grey (3) Blue (4) Black
Last Answer : (4) Black Explanation: A surface that absorbs all colours, reflecting none, is said to be black. Black is not a colour; it absorbs all the colours of the visible spectrum and reflects none of them to the eyes. White is a colour.
Description : An object which absorbs all colours and reflects none appears: (1) white (2) grey (3) blue (4) black
Last Answer : black
Description : The sky appears blue because of – (1) Atmospheric water vapour (2) Scattering of light (3) Reflection on sea water (4) Emission of blue wavelength by the sun
Last Answer : (2) Scattering of light Explanation: The sky is blue because the molecules in the air scatter light in the higher wavelengths (that is, the blue light), while lower wavelength light (that is ... reflected down from the scattering is blue, therefore a blue sky. This is called Rayleigh scattering.
Description : The sky appears blue because of (1) Atmospheric water vapour (2) Scattering of light (3) Reflection on sea water (4) Emision of blue wavelength by the sun
Last Answer : Scattering of light
Description : The blue colour of sky is due to – (1) reflection of sunlight (2) refraction of sunlight (3) scattering of shorter wave-lengths of sunlight in the atmosphere (4) scattering of longer wave-lengths of sunlight in the atmosphere
Last Answer : (3) scattering of shorter wave-lengths of sunlight in the atmosphere Explanation: The blue colour of the sky is caused by the scattering of sunlight off the molecules of the atmosphere. This scattering, ... to the direction of the sun's light is predominantly in the blue end of the spectrum.
Description : The blue colour of sky is due to (1) reflection of sunlight (2) refraction of sunlight (3) scattering of shorter wavelengths of sunlight in the atmosphere (4) scattering of longer wavelengths of sunlight in the atmosphere
Last Answer : scattering of shorter wavelengths of sunlight in the atmosphere
Description : To an astronaut sky appears (1) white (2) rich blue (3) light blue (4) dark
Last Answer : dark
Description : The colour of the ocean appears to be blue because the sunlight falling on it is – (1) reflected (2) refracted (3) diffracted (4) scattered
Last Answer : (4) scattered Explanation: The reason the ocean is blue is due to the absorption and scattering of light. The blue wavelengths of light are scattered, similar to the scattering of blue light in the sky ... the red and weak in the blue, thus red light is absorbed quickly in the ocean leaving blue.
Description : The colour of the ocean appears to be blue because the sunlight falling on it is (1) reflected (2) refracted (3) diffracted (4) scattered
Last Answer : scattered
Description : In the absence of the earth's atmosphere, sky would appear – (1) blue (2) deep red (3) white (4) black
Last Answer : (4) black Explanation: Sky appears blue because the tiny particles of the earth's atmosphere scatter the blue colour (short wavelength) of the sunlight more dominantly than other wavelengths. A blue ... in the absence of earth's atmosphere because there would be no particles to scatter the light.
Description : In the absence of the earth’s atmosphere, sky would appear (1) blue (2) deep red (3) white (4) black
Description : The phenomenon of light associated with the appearance of blue colour of the sky is – (1) Interference (2) Reflection (3) Refraction (4) Scattering
Last Answer : (4) Scattering Explanation: During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface ... day sky is a result of scattering, which is dominated by a smallparticle limit called Rayleigh scattering.
Description : The phenomenon of light associated with the appear-ance of blue colour of the sky is (1) Interference (2) Reflection (3) Refraction (4) Scattering
Last Answer : Scattering
Description : Blue of the sky is due to the (a) Refraction of white light by the atmosphere (b) Reflection of white light by the earth (c) Scattering of white light by molecules of air (d) Interference of white light
Description : To an astronaut in a spacecraft, the sky appears to be (1) Blue (2) White (3) Dark (4) Red
Last Answer : Dark
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.
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
Description : The sky appears blue due to – (1) Rayleigh scattering (2) Mie scattering (3) Back scattering (4) None of the above
Last Answer : (1) Rayleigh scattering Explanation: The blue colour of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little ... absorbed blue light is then radiated in different directions. It gets scattered all around the sky.
Description : The sky appears blue due to (1) Rayleigh scattering (2) Mie scattering (3) Back scattering (4) None of the above
Last Answer : Rayleigh scattering
Description : The sky appears blue because
Last Answer : the atmosphere scatters blue color more than the others
Description : The colour of the ocean appears blue because the sunlight falling on it is (a) Reflected (b) Refracted (c) Absorbed (d) Scattered
Last Answer : Ans:(d)
Description : If any colour dominates your wardrobe, which would you say it to be?
Last Answer : I can tell you that White does not dominate.
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.
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 : transmit or absorb light of different colours
Description : The type of radiative scattering commonly associated with the atmosphere and the reason the sky is blue is called what?
Last Answer : ANSWER: RAYLEIGH SCATTERING
Description : The blue colour of clear sky is due to--------? A. Reflection of light B. Refraction of light C. Diffraction of light D. Dispersion of light (Answer)
Last Answer : D. Dispersion of light (Answer)
Description : Why does a black board appears black in color? (1) It reflects black color (2) It absorbs black color (3) It reflects all colors (4) It absorbs all the colours
Last Answer : (4) It absorbs all the colors Explanation: When white light falls on an opaque body, it absorbs all the colors except one color which it reflects; this reflected color is the color of the body.
Description : The blueness of the sky is mainly due to -------? A. The scattering of sunlight by air molecules (Answer) B. The presence of water vapor C. Absorption of blue light by the air D. Emission of blue light by the atmosphere
Last Answer : A. The scattering of sunlight by air molecules (Answer)
Description : Why the sky appears dark instead of blue to an astronaut in space? -Space
Last Answer : The sky appears blue when the scattering of light takes place through the atmosphere.The blue color of the sky is due to scattering of light from the atmosphere.As there is no atmosphere in ... sky appears dark instead of blue to an astronaut in space. Public Domain Image, source: Shutterstock
Description : Why the Sky appears blue?
Last Answer : Due to the shorter wavelength of blue colour; it is scattered more than the red colour of longer wave- length
Description : Which colour is formed when Red and Green are mixed? (1) Light blue (2) Yellow (3) White (4) Grey
Last Answer : (2) Yellow Explanation: Red, green and blue are the primary colors and all other colors can be created from them. When red and green combine, the result is yellow.
Description : If white light shines on an object and the object appears blue, this means that?
Last Answer : The object reflects blue light more than it does any other color.
Description : Soaps come in different colours. But why is soap's lather always white in colour?
Last Answer : Lather or foam is nothing but a large collection of small soap bubbles. A soap bubble is , in turn, a very thin film of soap solution enclosing some air. Because of the low surface tension of ... collection of bubbles gets scattered. That is the reason why all kinds of lather or foam appear white.
Description : The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.
Last Answer : (b) genes for characters are located on the sex- chromosomes