Class 12 Physics - Chapter 13: Nuclei MCQ Questions

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A molecules break up at high temperature

B kinetic energy is high enough to overcome the coulomb repulsion between nuclei

C atoms get ionised at high temperature

D nuclei break up at high temperature

A change for ÃŸ-radioactivity but not for others.

B change for Î±-radioactivity but not for others.

C change for Î± and ÃŸ radioactivity but not for Î³-radioactivity.

D do not change for any type of radioactivity.

A t = (frac { T log(1.3) }{log(2)})

B t = (frac { T log(2) }{2log(1.3)})

C t = (frac { T }{log(1.3)})

D t = T log(1.3)

A (frac { 1 }{Î»})

B (frac { 1 }{9Î»})

C (frac { 1 }{8Î»})

D (frac { 1 }{7Î»})

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Class 12 Physics - Chapter 13: Nuclei MCQ Questions

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Class 12 Physics - Chapter 13: Nuclei MCQ Questions

Your Class 12 Physics Study Path

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A nuclear explosive is designed to deliver 1 MW power in the form of heat energy. If the explosion is designed with nuclear fuel consisting of U²³⁵ to run a reactor at this power level for one year, then the amount of fuel needed is (given energy per fission is 200 MeV)

When the radioactive isotope ₈₈Ra²²⁶ decays in a series by emission of three alpha (Î±) and a beta (ÃŸ) particle, the isotope X which remains undecayed is