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QAIPMT-2003-Ph-2728: NEET 2003 Physics - Class 12 AIPMT-2003-Ph-2728 Solution: A photoelectric cell is illuminated by a point source of light…
A photoelectric cell is illuminated by a point source of light 1 m away. When the source is shifted to 2 m then
Multiple Choice Options
- A each emitted electron carries one quarter of the initial energy
- B number of electrons emitted is half the initial number
- C each emitted electron carries half the initial energy
- D number of electrons emitted is a quarter of the initial number
Step-by-Step Verified Solution
For a light source of power P watt, the intensity at a distance d is given by
I = P 4 � d 2
_ Intensity _ 1 ( d i s tan _ c e ) 2