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A converging lens of focal length 5cm is used as a magnifying glass by...

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Question 609
A
8
B
7
C
6
D
5
E
4
Explanation
\(\frac{1}{f} = \frac{1}{u} + \frac{1}{v}\)

= \(\frac{1}{5} - \frac{1}{35} = \frac{30}{175}\)

U = \(\frac{175}{30}\) = 5.8m

\(\frac{v}{u} = \frac{35}{5.8}\)

= 6

Correct option: C

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