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Name the factors on which brightness of ...

Name the factors on which brightness of image in a camera depends and how ?

Text Solution

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Brightness of image in a camera is
(i) directly proportional to time of exposure (t),
(ii) directly proportional to the square of diameter (d) or amperture of the lens system,
(iii) inversely proportional to the square of focal length (f) of the lens system.
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