Notifications

Clear all

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) 0

Light Reflection and Refraction

1 Posts

2 Users

0 Likes

14.8 K Views

01/12/2020 10:56 am

Topic starter

Tulika pia

(@tulika-pia)

Illustrious Member

2124 Posts
2124 0 0

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

(d) 0

Add a comment

Topic Tags

1 Answer

01/12/2020 10:57 am

Kinjal ray

(@kinjal-ray)

Noble Member

2124 Posts
0 2124 0

(d) 0

Explanation:

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

Add a comment

Forum Icons: Forum contains no unread posts Forum contains unread posts

Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed

Forum