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NEET 2018, Physics Q13: Introduction and Photoelectric Effect

NEET2018Paper 2018Physics
Q.

When the light of frequency 2 (where   is threshold frequency), is incident on a metal plate, the maximum velocity of electrons emitted is v1 . When the frequency of the incident radiation is increased to 5 , the maximum velocity of electrons emitted from the same plate is v2 . The ratio of v1 to v2 is

  1. A

    1 : 2

  2. B

    4 : 1 

  3. C

    1 : 4 

  4. D

    2 : 1

Solution

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