Share

# A Proton and an α-particle Are Accelerated Through the Same Potential Difference. Which One of the Two Has (Ii) Less Kinetic Energy? - CBSE (Science) Class 12 - Physics

#### Question

A proton and an α-particle are accelerated through the same potential difference. Which one of the two has less kinetic energy? Justify your answer.

#### Solution

The kinetic energy is related to accelerating potential as

K.E. = eV

∴ K.E.p = epV

And, K.E.α = eαV

:.(K.E._p)/(K.E._alpha)=e_p/e_alpha

Since, the charge on proton is less than that on alpha particle,

K.E.p <  K.E.α for the same potential difference.

Is there an error in this question or solution?

#### Video TutorialsVIEW ALL [1]

Solution A Proton and an α-particle Are Accelerated Through the Same Potential Difference. Which One of the Two Has (Ii) Less Kinetic Energy? Concept: de-Broglie Relation.
S