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The Wavelengths for the Light of Red and Blue Colours Are Roughly 7 X 10-7 M and 4 X 10-7 M Respectively. Which Colour Has the Greater Speed in Vacuum? Which Colour Has the Greater Speed in Glass? - Physics

One Line Answer
The wavelengths for the light of red and blue colours are roughly 7 X 10-7 m and 4 X 10-7 m respectively. Which colour has the greater speed in vacuum? Which colour has the greater speed in glass?
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Solution

In vacuum both the colours have the same speed.
In glass, red colour has a greater speed.

Concept: Refraction of Light - Refraction of Light Through a Glass Block and a Triangular Prism
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APPEARS IN

Frank ICSE Class 10 Physics Part 2
Chapter 2 Light
Exercise 2.3 | Q 7 | Page 110
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