SATHEE: Optics Question 653

Optics Question 653

Question: A lens of power + 2 diopters is placed in contact with a lens of power - 1 diopoter. The combination will behave like

[UPSEAT 2000]

Options:

A) A divergent lens of focal length 50 cm

B) A convergent lens of focal length 50 cm

C) A convergent lens of focal length 100 cm

D) A divergent lens of focal length 100 cm

Show Answer

Answer:

Correct Answer: C

Solution:

$P = P_{1} + P_{2} \Rightarrow P = + 2 + (- 1) = + 1 D,$

$f = \frac{+ 100}{P} = \frac{+ 100}{1} = 100 c m$

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Optics Question 653

Question: A lens of power + 2 diopters is placed in contact with a lens of power - 1 diopoter. The combination will behave like

Options:

Answer:

Solution:

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