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Atoms and Nuclei question

2021 · Shift 2 · Q43
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Atoms and Nuclei question

2021 · Shift 2 · Q43

JEE AdvancedPhysicsAtoms and NucleiMultiple correct+4 / −2
A heavy nucleus N, at rest, undergoes fission N →\to→ P + Q, where P and Q are two lighter nuclei. Let δ\deltaδ= MN −-− MP −-− MQ, where MP, MQ and MN are the masses of P, Q and N, respectively. EP and EQ are the kinetic energies of P and Q, respectively. The speeds of P and Q are vP and vQ, respectively. If c is the speed of light, which of the following statement(s) is(are) correct?
  1. A
    EP+EQ=c2δ{E_P} + {E_Q} = {c^2}\deltaEP​+EQ​=c2δ
  2. B
    EP=(MPMP+MQ)c2δ{E_P} = \left( {{{{M_P}} \over {{M_P} + {M_Q}}}} \right){c^2}\deltaEP​=(MP​+MQ​MP​​)c2δ
  3. C
    vPvQ=MQMP{{{v_P}} \over {{v_Q}}} = {{{M_Q}} \over {{M_P}}}vQ​vP​​=MP​MQ​​
  4. D
    The magnitude of momentum for P as well Q is c2μδc\sqrt {2\mu \delta }c2μδ​, where μ=MPMQ(MP+MQ)\mu = {{{M_P}{M_Q}} \over {({M_P} + {M_Q})}}μ=(MP​+MQ​)MP​MQ​​
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