Question

one student is doing an experiment to draw the path of light rays passing through a glass slab for if he measured the angle of refraction and angle of emergency for every angle the incident what would be his observation in all the cases​

Answer 1

Explanation:

1.)For every value of angle of incidence between 30 degree and 60 degree, the angle of emergence is same.

Reason:Incident ray and emergent ray are parallel to each other.

or rectangular glass slab is a combination of two prisms in which one is in a tilted position.

refer: Newton's experiment.

2.) Angle of refraction is always less than the angle of incidence ,as v<c