Q105 / 120 · VITEEE 2006 · Physics

Which is the incorrect statement of the following?

A
Photon is a particle with zero rest mass
Correct answer
B
Photon is a particle with zero momentum
C
Photons travel with velocity of light in vacuum
D
Photons even feel the pull of gravity

Solution

Photon moves with speed of light ie, $v=c$ and rest mass of a particle is $\mathrm{m}_{0}=\mathrm{m} \sqrt{1-\mathrm{v}^{2} / \mathrm{c}^{2}}$ hence $m_{0}$ (photon) $=0$ $\therefore$ photon has zero rest mass. Momentum of photon $=\frac{\mathrm{h}}{\lambda}$

Hence, the correct answer is option: 'B'.

Relevant Questions

In an electric circuit, a capacitor of reactance is connected across the source of 220 V . The value of displacement current is2024Electromagnetic Waves and Maxwell's equations
The magnetic field in a electromagnetic wave is given by The frequency of the wave is (in GHz )2024Electromagnetic Waves and Maxwell's equations
An electromagnetic wave with poynting vector is absorbed by a surface area . The force on the surface is2024Electromagnetic Waves and Maxwell's equations
The electric field of a plane electromagnetic wave in free space travelling along $ {x}$-direction is given by : \(E_z=60 (k x+ t) {V} / {2023Electromagnetic Waves and Maxwell's equations
In an electromagnetic wave2019Electromagnetic Waves and Maxwell's equations
The magnetic field in a travelling electromagnetic wave has a peak value of . The peak value of electric field strength is2018Electromagnetic Waves and Maxwell's equations