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Optical Path Length

Why is film p...

Question

Why is film placed in a light proof box which is painted black from the inside?

A

To reduce external interference

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B

To reduce reflections of light within a camera

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C

To protect the film

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D

All of the above

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Solution

The correct option is D All of the above
A film is placed in a light proof box so that no unnecessary light waves are incident on the film and interference is minimum.

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