Question

A 1 cm object is placed perpendicular to the principal axis of a convex mirror of focal length 7.5 cm. The object should be placed in front of the mirror at a distance to get the size of the image as 0.6 cm is

Answer 1

Answer:

The magnification is given as,

m=−

u

v

0.6=−

u

v

The mirror formula is given as,

v

1

+

u

1

=

f

1

0.6u

1

−

u

1

=

f

1

u=5cm

Thus, the distance from the mirror is 5cm.

Explanation:

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