Question
Question: A particle which has zero rest mass and non-zero energy and momentum must travel with a speed....
A particle which has zero rest mass and non-zero energy and momentum must travel with a speed.
A
Equal to c, the speed of light in vacuum
B
Greater than c
C
Less than c
D
Tending to infinity
Answer
Equal to c, the speed of light in vacuum
Explanation
Solution
Particle is photon and it travels with the velocity equal to light in vacuum.