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QNEET-2018-Ph-881: NEET 2018 Physics - Class 12 NEET-2018-Ph-881 Solution: When the light of frequency \(2 _0\) (where \( _0\) is…

When the light of frequency

2\nu_0

(where

\nu_0

is threshold frequency) is incident on a metal plate the maximum velocity of electrons emitted is

v_1

. When the frequency of the incident radiation is increased to

5\nu_0

the maximum velocity of electrons emitted from the same plate is

v_2

. The ratio of

v_1

v_2

is 1:2 1:4 4:1 2:1

Step-by-Step Verified Solution

From Einstein�s equation 1 2 m v 1 2 = 2 h _ 0 _ h _ 0 = h _ 0 Again, 1 2 m v 2 2 = 5 h _ 0 _ h _ 0 = 4 h _ 0 _ v 1 v 2 = 1 4 = 1 2