Question

A ray is moving in glass incidents over glass-air interface. Then critical angle is maximum for-

• A. Red
• B. Yellow
• C. Violet
• D. Same for all the colours

Answer 1

Answer: (A)

Red

Answer 2

m V > I > B > G > Y > O > R

i_c V < I < B < G< Y < O < R

sin i_c = 1/m

\ i_c is maximum for Red.