1.

The threshold frequency for a certain metal is v_(0). When a certain radiation of frequency 2v_(0) is incident on this metal surface the maximum velocity of the photoelectrons emitted is 2xx10^(6)ms^(-1). If a radiation of frequency 3v_(0), is incident on the same metal surface the maximum velocity of the photoelectrons emitted (in m.s^(-1) ) is

Answer»

`2XX10^(6)`
`2sqrt2xx10^(6)`
`4sqrt2xx10^(6)`
`4sqrt3xx10^(6)`

ANSWER :B


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