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(a) A beam of monochromatic light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?(b) If white light is used in the same way as in part (a) above, what change is expected in the emergent beam?c) What conclusion do you draw about the nature of white light in part (b)?
(a) A beam of monochromatic light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
(b) If white light is used in the same way as in part (a) above, what change is expected in the emergent beam?
c) What conclusion do you draw about the nature of white light in part (b)?
Class 10 | ICSE | Physics | Selina | Spectrum
(a) A beam of monochromatic light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
(b) If white light is used in the same way as in part (a) above, what change is expected in the emergent beam?
c) What conclusion do you draw about the nature of white light in part (b)?

(a) Inside the prism, the light beam will be parallel to the base.

In the case of a minimum deviation,

angle of emergence equals angle of incidence

(b) White light is broken down into its component colours. This is how the spectrum is created.

(b) White light is polychromatic in nature, we infer.

i

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