Physics · 2021
JEE Main · 26 February 2021, Shift 1 · Q2
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. In the light of the above statements, choose…
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
In the light of the above statements, choose the most appropriate answer from the options given below:
| Assertion A : | Body 'P' having mass M moving with speed 'u' has head-on collision elastically with another body 'Q' having mass 'm' initially at rest. If m << M, body 'Q' will have a maximum speed equal to '2u' after collision. |
| Reason R : | During elastic collision, the momentum and kinetic energy are both conserved. |
Official answer
(1)
Both A and R are correct and R is the correct explanation of A.
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.