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An electron has a mass of 9.1×10^-31 kg ...

An electron has a mass of `9.1×10^-31` `kg` . It revolves round the nucleus in a circular orbit of radius `0.867×10^-12` `metre` at a speed of `4.8 ×10^8` m/s. The magnitude of its linear momentum in this motion is

A

`4.368 × 10^-22` kg-m/s

B

`2.834 × 10^-34` kg-m/s

C

`4.368 × 10^-24` kg-m/s

D

`2.834 × 10^-32` kg-m/s

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The correct Answer is:
A
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SURA PUBLICATION-NUCLEAR PHYSICS-ADDITIONAL QUESTIONS & ANSWER (CHOOSE THE CORRECT ANSWER)
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  3. For production of radio-isotopes , we use reactions.

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  7. are used to control the chain reaction.

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  8. The moderator used in nuclear reacton is .

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  9. Which of the following is not a moderactor?

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  10. The coolant used in fast breeder reactor is .

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  11. In nulcear reactors, convert fast neutrons into slow neutrons.

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  13. Mass of the fissile material at the critical size is called.

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  14. prevents the leakage of neutrons be reflecting them back.

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