Question

An object is placed at 15cm in front of a concave mirror of focal length 10cm. Calculate position and nature of an image

Answer 1

Soln :-. Given u = -10cm , v= ? , f = -15cm

Applying mirror's formula,1/v +1/u = 1/f

1/v + 1/-10 = 1/-15

1/v = -1/15 + 1/10

=(-2+3)/30

= 1/30

V = 30 cm.