Question

A converging mirror forms a real and inverted image of an object at a distance of 100 cm from it. Where should an object be placed in front of the mirror, so that the size of the image is twice the size of the object? Also, calculate the focal length of the mirror.

Answer 1

Answer:

hii

gud afternoon dear

have a great day

Answer 2

Explanation:

Magnification m=

u

−v

−4=

−20

−v

v=−80cm

From mirror formula

v

1

+

u

1

=

f

1

−80

1

+

−20

1

=

f

1

f

1

=

−80

1+4

f=−16cm

Thus focal length of converging mirror is 16 cm.