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The photon of frequency v has a momntum ...

The photon of frequency v has a momntum associated with it .If c is the velocity of light,then momentum is

A

`v//c`

B

`h v c`

C

`h v // c^2 s`

D

`h v //c`

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Define the term work function of a metal. The threshold frequency of a metal is f_0 when the light of frequency 2f_0 is incident on the metal plate, the maximum velocity of electrons emitted is v_1 , when the frequency of the incident radiation is increased to 5f_0 , the maximum velocity of electrons emitted is v_2 . Find the ratio of v_1 and v_2 .

Knowledge Check

  • Energy of a photon of frequency v is :

    A
    `h/v`
    B
    `v/h`
    C
    hv
    D
    `(hv)/c`
  • The momentum of a photon of frequency 'v' is :

    A
    `(hv)/(c )`
    B
    `(hc)/(v)`
    C
    Zero
    D
    None of these
  • Momentum of a photon of frequency v is :

    A
    `h"/"v`
    B
    `h"/"cv`
    C
    `hv"/"c`
    D
    `hcv`
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