The band of seven colours obtained due to the dispersion of white light is called?

The band of seven colours obtained due
to the dispersion of white light is called?
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1 Answer

Answer :

Visible Spectrum
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Related questions

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The splitting of white light into its components is due to: (1) Reflection (2) Refraction (3) Transmission (4) Dispersion

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The splitting of white light into its components is due to: (1) reflection (2) refraction (3) transmission (4) dispersion

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Last Answer : dispersion

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When white light passes through a glass prism, it gets dispersed into colours because (a) glass imparts colours to the light (b) different colours have different speeds in glass (c) interference of light occurs (d) diffraction of light occurs

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Last Answer : Ans:(b)

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 atmosphere. (c) Scattering of light Lakes place as various colours of white light travel with different speed in fir. d) The fine particles in the atmospheric air scatter the blue, light more strongly than red. So the scattered blue light enters our eyes.

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Last Answer : (c) Scattering of light Lakes place as various colours of white light travel with different speed in fir.

When white light is passed through a prism, it splits into ----- colours. A. 5 B. 6 C. 7 (Answer) D. 8

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Last Answer : C. 7 (Answer)

When viewed in white light, why do soap bubbles show colours? -Do You Know?

Description : When viewed in white light, why do soap bubbles show colours? -Do You Know?

Last Answer : When viewed in white light, a soap bubble shows colours because of. Due to interference, when soap bubble is viewed in white light it shows colours.

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

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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

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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.

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

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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

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When viewed in white light, why do soap bubbles show colours?

Description : When viewed in white light, why do soap bubbles show colours?

Last Answer : Because of interference

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

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

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

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Last Answer : Prism

Dispersion is used to describe the a. Splitting of white light into its component colors b. Propagation of light in straight lines c. Bending of a beam of light when it goes from one medium to another d. Bending of a beam light when it strikes a mirror

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Last Answer : a. Splitting of white light into its component colors

Dispersion is used to describe the ∙ a. Splitting of white light into its component colors ∙ b. Propagation of light in straight lines ∙ c. Bending of a beam of light when it goes from one medium to another ∙ d. Bending of a beam light when it strikes a mirror

Description : Dispersion is used to describe the ∙ a. Splitting of white light into its component colors ∙ b. Propagation of light in straight lines ∙ c. Bending of a beam of light when it goes from one medium to another ∙ d. Bending of a beam light when it strikes a mirror

Last Answer : a. Splitting of white light into its component colors

Tertiary colours are obtained by?

Description : Tertiary colours are obtained by?

Last Answer : Mixing up of two secondary colours

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

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

Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex? (A) Ammonium alum (B) Potassium alum(C) Both ‘a’ & ‘b’(D) Neither ‘a’ nor ‘b

Description : Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex? (A) Ammonium alum (B) Potassium alum (C) Both ‘a’ & ‘b’ (D) Neither ‘a’ nor ‘b

Last Answer : (C) Both ‘a’ & ‘b

What determines the range of wavelengths over which meaningful data is obtained for calculating the chromatic dispersion?

Description : What determines the range of wavelengths over which meaningful data is obtained for calculating the chromatic dispersion?

Last Answer : The wavelength range of the optical source(s) used.

The sun remains visible for some time after it actually sets below the horizon. This happens due to 1. atmospheric refraction 2. scattering of light 3. dispersion Which of the above statements is/are correct? (a) 1 only (b) 1 and 2 (c) 1 and 3 (d) 1, 2 and 3

Description : The sun remains visible for some time after it actually sets below the horizon. This happens due to 1. atmospheric refraction 2. scattering of light 3. dispersion Which of the above statements is/are correct? (a) 1 only (b) 1 and 2 (c) 1 and 3 (d) 1, 2 and 3

Last Answer : Ans:(a)

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)

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)

The redness in atmosphere at Sunrise and Sunset is due to – (1) Refraction of light (2) Reflection of light (3) Dispersion of light (4) Scattering of light

Description : The redness in atmosphere at Sunrise and Sunset is due to – (1) Refraction of light (2) Reflection of light (3) Dispersion of light (4) Scattering of light

Last Answer : (4) Scattering of light Explanation: The red colour in the sky at sunset (and sunrise) is due to an effect called Rayleigh scattering. At sunrise or sunset, since the Sun is low on the horizon, ... through more of the atmosphere - and therefore bounce off more molecules -than at other times of day.

On a rainy day, small oil films on water show brilliant colors'. This is due to A. dispersion B. interference C. diffraction D. Polarization 49.The critical angle for a beam of light passing from water into air is 48.8 °. This means that all light rays with an angle of incidence greater than this angle will be A. absorbed B. totally reflected C. Partially reflected and partially transmitted D. Totally transmitted

Description : On a rainy day, small oil films on water show brilliant colors'. This is due to A. dispersion B. interference C. diffraction D. Polarization 49.The critical angle for a beam of light ... A. absorbed B. totally reflected C. Partially reflected and partially transmitted D. Totally transmitted

Last Answer : C. Partially reflected and partially transmitted

The redness in atmosphere at Sunrise and Sunset is due to : (1) Refraction of light (2) Reflection of light (3) Dispersion of light (4) Scattering of light

Description : The redness in atmosphere at Sunrise and Sunset is due to : (1) Refraction of light (2) Reflection of light (3) Dispersion of light (4) Scattering of light

Last Answer : Scattering of light

Regarding the National Flag choose the correct options from the following statements i) It has a horizontal strip of three colours including deep saffron at the top, white in the middle, and dark green at the bottom. ii) The ratio of the flag width to its length is 2:3 -Science

Description : Regarding the National Flag choose the correct options from the following statements i) It has a horizontal strip of three colours including deep saffron at the top, white in the middle, and dark green at the bottom. ii) The ratio of the flag width to its length is 2:3 -Science

Last Answer : Both i and ii The National Flag of India has a horizontal strip of three colours including deep saffron (Kesaria) at the top, white in the middle, and dark green at the bottom. The ratio of the flag width to its length is 2:3.

What are the primary colours? (a) Blue, green, yellow (b) Yellow, red, blue (c) Red, blue, green (d) Green, white, black

Description : What are the primary colours? (a) Blue, green, yellow (b) Yellow, red, blue (c) Red, blue, green (d) Green, white, black

Last Answer : Ans:(b)

Equal parts of a flag pole are painted with saffron, white, and green colours. If one-third of the portion painted green is 2 m long, then find the le

Description : Equal parts of a flag pole are painted with saffron, white, and green colours. If one-third of the portion painted green is 2 m long, then find the le

Last Answer : Equal parts of a flag pole are painted with saffron, white, and green colours. If one-third of the ... 2 m long, then find the length of the pole

An object which absorbs all colours and reflects none appears: (1) White (2) Grey (3) Blue (4) Black

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.

Soaps come in different colours. But why is soap's lather always white in colour?

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.

A box contains 4 green, 5 red and 6 white balls. Three balls are drawn randomly. What is the probability that the balls drawn are of different colours? a) 24/91 b) 67/91 c) 21/91 d) 70/91 e) 3/13

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Last Answer : Answer is: a)

All the six faces of a cube of a cube are coloured with six different colours - black, brown, green, red, white and blue. 1. Red face is opposite to the black face. 2. Green face is between red and black faces. 3. Blue face is adjacent to white face. 4. Brown face is adjacent to blue face. 5. Red face is in the bottom. Which face is opposite to green ? (a)Red (b)white (c) blue (d)brown

Description : All the six faces of a cube of a cube are coloured with six different colours - black, brown, green, red, white and blue. 1. Red face is opposite to the black face. 2. Green face is between red and black ... face is in the bottom. Which face is opposite to green ? (a)Red (b)white (c) blue (d)brown

Last Answer : (c) blue

All the six faces of a cube of a cube are coloured with six different colours - black, brown, green, red, white and blue. 1. Red face is opposite to the black face. 2. Green face is between red and black faces. 3. Blue face is adjacent to white face. 4. Brown face is adjacent to blue face. 5. Red face is in the bottom. Which of the following is adjacent to green ? (a) Black, white, brown, red (b) Blue, black, red, white (c) Red, black, blue, white (d) None of these

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Last Answer : (a) Black, white, brown, red

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Description : An object which absorbs all colours and reflects none appears: (1) white (2) grey (3) blue (4) black

Last Answer : black

Most of the red; blue and purple colours of plants are due to a pigment called?

Description : Most of the red; blue and purple colours of plants are due to a pigment called?

Last Answer : anthocyanin

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Description : Diffusion due to thermal motion is called  a. dilation  b. infusion  c. effusion  d. dispersion

Last Answer : effusion