Question

in a concave mirror , image distance is found to be equal to object distance and each one of them is equal to 30 cm . find radius of curvature of the mirror ​

Answer 1

Answer:

ANSWER

Given

Object distance, u=24cm

Image distance, v=16cm

From mirror formula

f

1

=

v

1

+

u

1

f

1

=−

16

1

−

24

1

=−(

16×24

24+16

)

−

24

10

f=9.6cm= focal length

Radius of cuvature R=2f

=2×−9.6

=−19.2cm

magnification, m=−

u

v

=−

−24

−16

m=−

3

2

Answer 2

Answer:

An object is placed exactly midway between a concave mirror of radius of curvature 40cm and a convex mirror of radius of curvature 30cm. The mirrors face each other and are 50cm apart. Determine the nature and position of the image formed by successive reflections first at the concave mirror and then at the convex mirror.