Identify the power of the lens in increasing order for the following cases
1) lens of focal length 10 cm
2) lens of focal length 10 m
3) lens of focal length 2 m
4) lens of focal length 50 m

3, 2, 4, 1

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4, 2, 3, 1

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2, 3, 1, 4

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1, 4, 3, 2

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Solution

The correct option is D 4, 2, 3, 1
$p = \frac{1}{f (in m)} p_{1} = \frac{100}{10} = 10 D p_{2} = \frac{1}{10} = 0.1 D p_{3} = \frac{1}{2} = 0.5 D p_{4} = \frac{1}{50} = 0.02 D$

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Identify the power of the lens in increasing order for the following cases1) lens of focal length 10 cm2) lens of focal length 10 m3) lens of focal length 2 m4) lens of focal length 50 m

The correct option is D 4, 2, 3, 1p=1f(in m )p1=10010=10 Dp2=110=0.1 Dp3=12=0.5 Dp4=150=0.02 D

Identify the power of the lens in increasing order for the following cases
1) lens of focal length 10 cm
2) lens of focal length 10 m
3) lens of focal length 2 m
4) lens of focal length 50 m

The correct option is D 4, 2, 3, 1
$p = \frac{1}{f (in m)} p_{1} = \frac{100}{10} = 10 D p_{2} = \frac{1}{10} = 0.1 D p_{3} = \frac{1}{2} = 0.5 D p_{4} = \frac{1}{50} = 0.02 D$