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What is a photon? Show that it has zero ...

What is a photon? Show that it has zero rest mass or photons can not exist at rest. Explain.

A

zero

B

`1.6xx10^(-19)kg`

C

`3.1xx10^(-30)kg`

D

`9.1xx10^(-31)kg`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The rest mass of a photon is

    A
    very small
    B
    very large
    C
    zero
    D
    dependent on velocity

  • A photon in motion has a mass

    A
    `c//hv`
    B
    `h//v`
    C
    `hv`
    D
    `hv//c^(2)`

  • A photon in motion has a mass

    A
    `h/v`
    B
    `(hv)/(c^2)`
    C
    `( c)/(hv)`
    D
    hv

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