Question

An object is placed at a distance of 25 cm. from a concave mirror of focal length 15 cm. Calculate the distance of the image from the mirror

Answer 1

Answer:

Given :

u = - 25cm

f = - 15cm

Solution :

We know:

1/v + 1/u =1/f

Therefore, 1/v = 1/f - 1/u

1/v = - 1/15 - (-1/25)

1/v = - 1/15 + 1/25

1/v = - 5+3/75

1/v = - 2/75

v = - 37.5