Question

MCQ Of Chapter Light Class 10
Question 7. A concave mirror of
radius 30 cm is placed in water.
It's focal length in air and water
differ by
(a) 15
(b) 20
(c) 30
(d) o
Answer/Explanation​

Answer 1

Explanation:

The answer is 30 ..

I HOPE IT WILL BE RIGHT ANSWER..

Answer 2

Answer:

0

Explanation:

The focal length of spherical mirror does not depends on the surrounding medium.