(a)For which colour of white light, is the refractive index of a transparent medium (i) the least (ii) the most? - Noon Academy

(a)For which colour of white light, is the refractive index of a transparent medium (i) the least (ii) the most?

ICSE | Physics | Refraction of Light at Plane Surfaces | Selina

(a)For which colour of white light, is the refractive index of a transparent medium (i) the least (ii) the most?

(b) Which colour of light travels fastest in any medium except air?

Solution:

(a)

(i) Red has the lowest refractive index of any transparent medium.

(ii) Violet colour has the highest refractive index of any transparent medium.

(b) The red color has the longest wavelength. As a result, red travels the fastest in all mediums except air.

i

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