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Question

For light of certain frequency
(i) _____ the threshold frequency, the photoelectric current is
(ii) _____ proportional to the intensity of light.
The blank spaces (i) and (ii) in above statement must be filled with
  1. (i) below (ii) directly
  2. (i) above (ii) directly
  3. (i) below (ii) inversely
  4. (ii) above (ii) inversely

A
(i) below (ii) inversely
B
(ii) above (ii) inversely
C
(i) above (ii) directly
D
(i) below (ii) directly
Solution
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For a light of frequency greater than the threshold frequency only ejection of electrons can take place, and current in it is directly proportional to the intensity of the incident light.

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