Question

An object is placed 8cm in front of a concave mirror of focal length 12cm. Find the nature, position and magnification of the image. Draw the ray diagram to show the image formation.

Answer 1

Answer:

the image is enlarged, erect, virtual image at the distance of 24cm

magnification=3

Explanation:

f=-12cm

u=-8cm

mirror formula

1/f= 1/v+1/u

1/-12= 1/v+1/-8

1/v= 1/8-1/12

v=24cm

magnification m=-v/u = -24/-8=3