Question

10. A convex lens of focal length 10 cm forms a virtual image of an object at 30 cm from the lens.
The magnification produced will be
(1) 2
(2) 3
(3) 3.5
(4) 4​

Answer 1

Answer:

2

Explanation:

1/f=1/v+1/u

1/10=1/30+1/u

1/u=1/10 -1/30

1/u=1/15

u=15cm

m=v/u

=30/15

=2

Answer 2

Answer:

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Explanation:

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