Question

Consider (a) an electron (b) a photon, and (c) a proton, all moving in vacuum. Choose all correct answers for each question. (iv) Which carry momentum?

Answer 1

Electron, photon and proton carry momentum .

• De Broglie derived the relationship between the wavelength and momentum of matter. This relationship is known as de Broglie's relationship.
• De Broglie's relationship is given by $\lambda=\frac{h}{mv}$   ...(1)
• Momentum is the product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction.

Equation (1) can be written as   $\lambda=\frac{h}{p}$   where λ  is known as de Broglie wavelength and p is momentum , h = Plank’s constant

For photon , the momentum is given by   $p=\frac{E}{c}$   ...(2)  where c is the speed is the speed of light .

From equation (1) and (2) we can conclude that electron, photon and proton carry momentum .

Learn about more photon momentum here :

brainly.com/question/13112527

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