Question

A square of length 3cm is located distance of 25 cm from concave mirror of focal length 10 cm . The centre of square is at the axis of mirror .What is the area enclosed by image of the square.​

Answer 1

Answer:-

1/f =1/u + 1/v

1/v = 1/-10 - 1/-25

= -3/50

v = -50/3

m h'/h =-v/u

h is the height of the object

h'/3 = -(50/3)/-25 h = -2cm

=(-2cm)^2

= 4cm^2 so the area enclosed by image of wire.