Question

An image of a linear object due to a convex mirror is 1/4ᵗʰ of the length of the object. If focal length of the mirror is 10 cm, find the distance between the object and the image. The linear object is kept perpendicular to the axis of the mirror.

Answer 1

A convex mirror has focal length 10 cm .a linear object AB =5 cm is placed.

A convex mirror has focal length 10 cm .a linear object AB =5 cm is placed along the optical axis.

Point B is at distance 25 cm from the pole of mirror.

The size of the mirror and for point B f=10cm u=-30 1/v=1/10-1/-30 v=30/4cm size of image.

Answer 2

Answer:

A convex mirror has focal length 10 cm .a linear object AB =5 cm is placed.

A convex mirror has focal length 10 cm .a linear object AB =5 cm is placed along the optical axis.

Point B is at distance 25 cm from the pole of mirror.

The size of the mirror and for point B f=10cm

u=-30

1/v=1/10-1/-30

v=30/4cm size of image.

Explanation: