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Mass of photon in motion is ………...

Mass of photon in motion is ………

A

`(c )/(hf)`

B

`(h)/(lambda)`

C

hf

D

`(hf)/(c^(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
E=hf
`mc^(2)=hf [E=mc^(2)]`
`therefore m=(hf)/(c^(2))`
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Knowledge Check

  • Mass of photon moving with speed v is ……, m_(0) is rest mass of photon.

    A
    zero
    B
    `(m_(0 ))/(sqrt(1-(c^(2))/(v^(2))))`
    C
    `(m_(0))/(sqrt(1-(v^(2))/c^(2)))`
    D
    infinite

  • When kinetic energy of proton is equal to energy of photon then ratio of de-Broglie wavelength of proton and photon is proportional to …..

    A
    E
    B
    `E^(-(1)/(2))`
    C
    `E^((1)/(2))`
    D
    `K_(2)=2K_(1)`

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