Question

an object is placed 20 cm in form of cancave mirror whose focal length is 25cm whese is the image located​

Answer 1

Answer:

5

Explanation:

given :

u= -20 cm

f=-25 cm

using formula:

1/v+1/u=1/f

1/v=1/20-1/25

(25-20)/500

1/v=5/500

1/100

v=100cm

now magnification =-v/u

=100/(-20)=5