Question

1. All the rays passing through the optical centre of a concave
lens will after refraction go:-
(a) through F
(b) Parallel
(c) Undeviated
(d) through 2F
​

Answer 1

Answer:

All the rays passing through the optical center of lens will go undeviated after refraction because every ray passing through optical center is normal to surface of lens and hence make a zero angle with normal

So they remain undeviated

Option : C

Answer 2

Answer:

(c)

Explanation:

All the rays passing through the optical center of lens will go undeviated after refraction because every ray passing through optical center is normal to surface of lens and hence make a zero angle with normal

So they remain undeviated