Question

1. The band of seven colours obtained on a screen when white light passes through a
prism is called spectrum.
2. It is first face of a prism which disperses white light.
3. During refraction through prism a ray bends away from its base.
4. For a prism ZA + ZD = Zi +Ze.
5. The angle between the incident ray and the emergent ray in case of a prism is called angle of prism.​

Answer 1

Answer:

When light light is passed through the prism, each colour ( wavelength ) of light is deviated by a different amount. This causes splitting of colours in white light into its components. The band of colours obtained on splitting of white light is called spectrum.

Explanation:

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Answer 2

Answer:

1.Dispersion is the phenomenon of splitting of polychromatic light into its constituent colours.

2.Hence, it is the second face of a prism which disperses white light and the statement is false

3.A ray of light bends towards the base when passing through a glass prism as the material of prism is denser.

4.

5.The angle between the incident ray and the emergent ray in a glass prism is called as. ... Hint: Refraction through a prism occurs when light passes from a lighter medium to the denser medium.

Explanation:

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