A lens having focal length f and aperture of diameter d forms an image of intensity I.Aperture of diameter d/2 in central region of lens is covered by a black paper. Focal length of lens and intensity of image now will be respectively (2010)

Class 12 NEET Physics Optics Questions Part 1

Question : 41 of 100

Marks: +1, -0

A lens having focal length f and aperture of diameter d forms an image of intensity I.Aperture of diameter

in central region of lens is covered by a black paper. Focal length of lens and intensity of image now will be respectively

(2010)

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