In a photo cell, the photo-electrons emission takes place
In a photo cell, the photo-electrons emission takes place
- A
After $10^{-1}$sec on incident of light rays
- B
After $10^{-3}$sec on incident of light rays
- C
After $10^{-6}$sec on incident of light rays
- D
After $10^{-8}$sec on incident of light rays
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