Home
Class 10
PHYSICS
What is the focal length of a plane mirr...

What is the focal length of a plane mirror ?

A

`-25`

B

infinite

C

zero

D

25cm

Text Solution

Verified by Experts

The correct Answer is:
B
Explanation: Focal length of a plane mirror is infinite as the radius of curvature is infinite.
Promotional Banner

Similar Questions

Explore conceptually related problems

Focal length of a plane mirror is

The image of a distant object is formed at 30 cm from a concave mirror. What is the focal length of the mirror?

A ray of light passing through A retraces its path on reflection from a concave mirror. If PA=30 cm , what is the focal length of the mirror ?

A candle is placed 20cm from the surface of a convex mirror and a plane mirror is also placed so that the virtual images in the two mirrors coincide. If the plane mirror is 12 cm away from the object, what is the focal length of the convex mirror?

What is the value of focal length of a plane mirror ?

(a) What is focal length of a convex mirror of radius of curvature 20 cm ? (b) What is radius of curvature of a mirror of focal length - 50 cm ?