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The momentum of a photon (frequency = f,...

The momentum of a photon (frequency = f, rest mass = 0) is

A

`(hf)/(c)`

B

`(h lamda)/(c)`

C

`(hc)/(lamda)`

D

zero

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The momentum of photon having 6Mev energy is

    A
    `3.2xx10^-21`
    B
    2
    C
    `1.6xx10^-21`
    D
    none of these

  • n number of photons of frequency f are emitted per second from a light source of power P (h = Planck's constant, c = speed of light). Then

    A
    `n = (P)/(hf)`
    B
    energy of each photon `= (P)/(cn)`
    C
    momentum of each photon `= (P)/(cn)`
    D
    value of n increases if the wavelength of the light increases

  • A particle performs uniform circular motion with an angular momentum L,. If the frequency of the particle motion is doubled the angular momentum becomes

    A
    2 L
    B
    4 L
    C
    `(L)/(2)`
    D
    `(L)/(4)`

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