Question

A square wire of side 1cm is placed perpendicular to the principal axis of a concave mirror of focal length 15cm at a distance of 20 cm.the area enclosed by the wire is

Answer 1

Answer:

Let as assume that,

The focal length of the concave mirror is

f=−15cm

u=−20cm

The magnification (m),

m=

u−f

f

=

120+15

−15

m=3cm

So,

The area enclosed by the image of the wire is

=m

2

=9cm

2

Answer 2

Explanation:

9 cm is the answer...jsoajskqhsmsmmsle

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