Refractive Index Multiple Choice Questions (MCQ) PDF Download

MCQ 1: If the refractive index of water is 1.33 and of air is 1, the value of critical angle for water at 90° refracted angle should be

1. 45°
2. 48.8°
3. 51.6°
4. 59.8°

MCQ 2: The greater the value of refractive index of a medium, the bending of light will be

1. greater
2. smaller
3. zero
4. negative

MCQ 3: A girl accidently dropped a ring into a pool at night. She shone a powerful torch light to locate the ring. The refractive index of water is 1.33, what is the pool's depth?

1. 2 m
2. 2.6 m
3. 1.1 m
4. 1.9 m

MCQ 4: The refractive index is the ration between the speed of light in air or vacuum and

1. a speed of sound in a medium
2. a speed of light in a medium
3. can be A or B
4. none of the above