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A nucleus with mass number 220 initially...

A nucleus with mass number `220` initially at rest emits an `alpha`-particle. If the Q-value of the reaction is `5.5 MeV`, calculate the kinetic energy of the `alpha`-particle.

A

4.4 MeV

B

5.4 MeV

C

5.6 MeV

D

6.5 MeV

Text Solution

Verified by Experts

The correct Answer is:
B
`K_alpha = ((A-4))/A Q`
Here, A=220 , Q=5.5 MeV
`K_alpha =((220-4)/220)5.5` MeV = `(216/220)`5.5 MeV = 5.4 MeV
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