The velocities of light in air and glass are 3.0 x 10\(^8...
The velocities of light in air and glass are 3.0 x 108ms−1 and 2.0 x 108ms−1 respectively. If the angle of refraction is 30º, the sine of the angle of incidence is?
0.33
0.50
0.67
0.75
Correct answer is D
sin isin r = velocity in airvelocity in glass
sin isin 30 = 3×1082×108
Sin i = 34 = 0.75
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