Question

1.
Find the focal length of a convex mirror whose radius of curvature is
32 cm
2.
A concave mirror produces three times magnified (enlarged) real image
of an object placed at 10 cm in front of it. Where is the image located?​

Answer 1

Question 1 :

Find the focal length of a convex mirror whose radius of curvature is 32 cm.

Answer 1 :

Radius of curvature = 32 cm

Focal length = R/2 = 32/2 = 16 cm

So, focal length of the Convex mirror = + 16 cm.

Question 2 :

A concave mirror produces three times magnified (enlarged) real image of an object placed at 10 cm in front of it. Where is the Image located ?

Answer 2 :

Object Distance = - 10 cm

Magnification = - 3

Nature of the Image = Real and Inverted

Magnification = -v/u

Hence, -3 = -v/-10

➸ -v = -3*-10

➸ -v = 30

➸ v = -30 cm

So, Image Distance = - 30 cm i.e. Image is located 30 cm in front of the mirror.