Question

An object is placed at a distance 20cm from the pole of the convex mirror of focal length 20cm.The image is produced at? Also states the nature of the image.​

Answer 1

Explanation:

u=−20cm, f=20cm

From mirror formula

f

1

=

v

1

+

u

1

20

1

=

v

1

+

−20

1

v

1

=

20

1

+

20

1

v

1

=

20

2

=v=10cm.

Answer 2

Explanation:

u=−20cm, f=20cm

From mirror formula

1/f = 1/v + 1/u

1/20 = 1/v + 1/-20

1/v = 1/20 + 1/20

1/v = 2/20

v = 10 cm