Question

if an object of 10cm is placed at a distance of 36 centimetres from a concave mirror of focal length 12 centimetre find the position, nature and height of the mirror

Answer 1

1/v + 1/u = 1/f
u = -36cm  f = -12 cm
1/v = -1/12 + 1/36 = -1/18        so  v= -18 cm
m = - v/u = -1/2

height of the image = 10 cm * -1/2 = -5 cm

so image is real inverted and of height 5 cm.

Answer 2

here is ur answer!!