Questions
A photo cell is illuminated by a small bright source placed 1m away. When the same source of light is placed 1/2 m away. Which of the following is true about the electrons emitted by the photo cathode
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Correct option is D
Similar Questions
A photo cell is illuminated by a small bright source placed at 1m away. When the same source of light is placed 2m away, which of the following is true about the electrons emitted by the photo cathode?
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