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A camera objective has an aperture diame...

A camera objective has an aperture diameter d . If the aperture is reduced to diameter `d//2` the exposure time under identical conditions of light should be made

A

`sqrt(2)` fold

B

2 fold

C

`2sqrt(2)` fold

D

4 fold

Text Solution

Verified by Experts

The correct Answer is:
d
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ERRORLESS -RAY OPTICS-SET
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