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Mass of two substances are 1 g and 9 g r...

Mass of two substances are 1 g and 9 g respectively. If their kinetic energies are same, then the ratio of their momentum will be……………

A

`1:9`

B

`9:1`

C

`3:1`

D

`1:3`

Text Solution

Verified by Experts

The correct Answer is:
d
Kinetic energy K.E. `= P^2/(2m)`
If the KE are same `(P_1)/(P_2) = sqrt((m_1)/(m_2)) = sqrt(1/9) = 1/3 implies P_1 : P_2 = 1:3`
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