Question

18. A light ray is coming from air to glass and undergo refraction. Draw a ray diagram to show
refraction, air to glass and glass to air and answer the following question.
a) Why is incident ray parallel to emergent ray?
b) Which law should be followed while drawing ray diagram? State the law.​

Answer 1

Answer:

Don't know answer

Explanation:

Sorry

Answer 2

Explanation:

1st answer=Emergent ray is parallel to the incident ray, after the refraction of Incident ray through a glass slab because the angle of incidence is equal to the angle of emergence and they are also the alternate interior angles

2nd answer=

Rules for drawing Ray Diagram in Lenses

Rule 1 - Ray parallel to principal axis will through focus. For a convex lens , ...

Rule 2 - Ray paing through focus will become parallel to principal axis. For a convex lens, ...

Rule 3 - Ray paing through Optical Center will emerge without deviation