Question

# A ray of light is incident at the glass–water interface at an angle *i*, it emerges finally parallel to the surface of water, then the value of would be

- (4/3) sin i

- 1/sin i
- 4/3
- 1

## The correct answer is: 1/sin i

### For glass-water interface …(i)

For water-air interface …(ii)

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