Question

a concave mirror of radius of curvature 20cm is placed at a distance of 15cm from an object of length 1mm. what is the magnification? what is the length of the image?​

Answer 1

Answer:

Given: f=-10 cm v=-35 cm [concave mirror]

To find : u

Solution : From mirror formula

v

1

+

u

1

=

f

1

−35

1

+

u

1

=

−10

1

u

1

=

35

1

−

10

1

u=

25

350

u=−14cm