Question

Aray of light passes through a plane glass slab of thickness t and refractive index M. The angle between incident and emergent ray is:
O 0°
O 30°
_45°
0_90​

Answer 1

The angle between incident and emergent ray is 0°.

Option (A) is correct.

Explanation:

The angle between incident and emergent ray is 0°.

• The ray passe from rare medium to dense medium and then again emerges into rare medium that is air.
• The incident ray and emergent ray are parallel to each other and are displaced due to reflection at two surfaces.
• We can say that the emergent ray will be parallel to the incident ray.
• Therefore the angle formed between them is zero.

Answer 2

Answer:

option a is correct...