For a certain metal ν = 2 ν 0 and the electrons come out with a maximum velocity of 4 × 10 6 m s - 1 . If the value of ν = 5 ν 0 , then maximum velocity of photoelectrons will be ( ν 0 is the threshol

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For a certain metal ν = 2 ν 0 and the electrons come out with a maximum velocity of 4 × 10 6 m s - 1 . If the value of ν = 5 ν 0 , then maximum velocity of photoelectrons will be ( ν 0 is the threshold frequency)

TestHub · Accepted Answer

1 2 m v 1 2 = 2 h ν 0 - h ν 0 = h ν 0 and 1 2 m v 2 2 = 5 h ν 0 - h ν 0 = 4 h ν 0 So, 1 2 m v 2 2 = 4 × 1 2 m v 1 2 or v 2 = 2 v 1 = 2 × 4 × 10 6 = 8 × 10 6 m s - 1

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