Question

[2]
(a) The wave lengths for the light of red and blue colours are nearly 7.8 x 10-7m
and 4.8 x 10-7 m respectively.
(1) Which colour has the greater speed in a vacuum?
(ii) Which colour has a greater speed in glass?​

Answer 1

Answer:

for both answers red is correct one

Explanation:

red is least deviate so it can travel fast than blue in vacuum and glass

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Answer 2

Answer:

(i) In vacuum, all colours of light have the same speed

(ii) In glass, red light is faster than violet colour of light.

Explanation:

Hope this helps you out...

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