Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6

Q.

A concave mirror's focal length  is f in air. Its water focal length (refractive index 43) will be


 

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya

a

f

b

34f

c

43f

d

73f

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

A concave mirror is one that has the inside surface of a spherical mirror as the reflecting surface. It is also known as a focusing mirror or a converging mirror.

The focal length of a concave mirror is the distance between the pole (center of reflecting surface) and the focus (F).

When concave mirrors are immersed in water, the focal length of the mirrors does not change. 

Hence option (A) is correct.


 


 


 

Watch 3-min video & get full concept clarity

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon