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The Critical Angle for Glass-air is 450 for the Light of Yellow Colour. State Whether It Will Be Less Than, Equal To, Or More than 450 for (I) Red Light, (Ii) Blue Light? - Physics

One Line Answer
The critical angle for glass-air is 450 for the light of yellow colour. State whether it will be less than, equal to, or more than 450 for (i) red light, (ii) blue light?
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Solution

The critical angle for a pair of media is:
(i) more than 45o for red light.
(ii) less than 45o for blue light.

Concept: Total Internal Reflection
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APPEARS IN

Frank ICSE Class 10 Physics Part 2
Chapter 2 Light
Exercise 2.1 | Q 3 | Page 89
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