1.

An object of highest 5 cm is placed at a distance of 25 cm from a concave mirror, if the radius of curvature of the mirror is 10 cm, then calculate1) distance of the image from the mirror2) height of the image3) nature of the image4) magnification

Answer»

EXPLANATION:

GIVEN : u=−25 cm f=−10 cm h

o

=5 cm

Using

v

1

−

u

1

=

f

1

Or

v

1

−

(−25)

1

=

(−10)

1

⟹ v=−7.14 cm

Height of image

h

o

h

i

=

u

v

Or

5

h

i

=

−25

−7.14

⟹ h

i

=1.43


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