Flash Education

Question

How is the focal length of a spherical mirror related to it’s radius of curvature?

Reflection of Light Class 9 ICSE

March 24, 2024

Answer

The focal length ‘f’ is related to the radius of curvature ‘R’ in the following way —

f = R/2

Was this answer helpful?

Didn't liked the above answer ?

Text Generation Tool

💡 Some Related Questions

little-girl-admiring-her-reflection-in-the-mirror

The magnification for a mirror is -3. How are u and v related?

little-girl-admiring-her-reflection-in-the-mirror

The erect image formed by a concave mirror is of size double the size of object. How are u and v related?

little-girl-admiring-her-reflection-in-the-mirror

The image formed by a convex mirror is of size one-third the size of object. How are u and v related?

little-girl-admiring-her-reflection-in-the-mirror

A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find (a) the focal length of the mirror (b) position of the image.

little-girl-admiring-her-reflection-in-the-mirror

A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find (a) the focal length of mirror (b) position of image.

little-girl-admiring-her-reflection-in-the-mirror

An object of length 4 cm is placed in front of a concave mirror at a distance 30 cm. The focal length of mirror is 15 cm. (a) Where will the image form? (b) What will be the length of image?

little-girl-admiring-her-reflection-in-the-mirror

When an object of height 1 cm is kept at a distance 4 cm from a concave mirror, it’s erect image of height 1.5 cm is formed at a distance 6 cm behind the mirror. Find the focal length of the mirror.

little-girl-admiring-her-reflection-in-the-mirror

A point light source is kept in front of a convex mirror at a distance of 40 cm. The focal length of the mirror is 40 cm. Find the position of image.

little-girl-admiring-her-reflection-in-the-mirror

An object 5 cm high is placed at a distance 60 cm in front of a concave mirror of focal length 10 cm. Find (i) the position and (ii) size, of the image.

little-girl-admiring-her-reflection-in-the-mirror

At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.

error: Content is protected !! 💀