Question

while performing the experiment with glass slab what should be the range of incident angle?give reason for your answer.

Answer 1

Ideally, any angle between 0 degree and 90 degree would suffice for the experiment. 

However, the average middle range ideal for the incident angle is 30-60 degree. This is because, outside this range, the refracted rays would reduce in intensity and would not be visible property.

Regards [Brainly Expert]
[Thank You]
If you are satisfied with my answer, Mark my answer as the brainliest.