Question
Assertion : For the sensitivity of a camera, its aperture should be reduced.
Reason : Smaller the aperture, image focussing is also sharp.

Answer

(c) Very large apertures gives blurred images because of aberrations. By reducing the aperture the clear image is obtained and thus the sensitivity of camera increases.Also the focussing of object at different distance is achieved by slightly altering the separation of the lens from the film.

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