Question

an object is placed 24cn away from a spherical mirror is found to give a real image 12cm from the mirror. what is the focal length of the mirror​

Answer 1

Step-by-step explanation:

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:

24cn away from a spherical mirror is found to give a real image 12cm from the mirror. what is the focal length of the mirror