Question

An object is placed at 25 CM in front of a concave lens of focal length 25 cm find the location and nature of image....
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Answer 1

Explanation:

Given,

Object distance, u=25cm

Focal length, f=20cm

From mirror formula

f

1

=

v

1

+

u

1

−20

1

=

v

1

−

25

1

⇒

v

1

=−

20

1

+

25

1

v=100cm

The image will be real, inverted magnified