Question

In the experiment of refraction through a glass slab, the angle of incidence should be less than 90°. Why? ​

Answer 1

Answer:

The angle of refraction is less than angle of incidence because light is travelling from rarer to denser optical medium. ... When the light ray travels from optically rarer medium (air) to optically denser medium (glass) the light bends towards the normal

Answer 2

Explanation:

The angle of refraction is less than angle of incidence because light is travelling from rarer to denser optical medium. 3. The lateral displacement remains the same for different angles of incidences.

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