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In one average-life,...

In one average-life,

A

A half the active decay

B

less than half the active nuclei decay

C

more than half the active nuclei decay

D

all the nuclei decay

Text Solution

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The correct Answer is:
C
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RESONANCE-NUCLEAR PHYSICS-Exercise-1 Part-2 Only one option correct type
  1. The energy of the reaction Li^(7)+prarr2He^(4) is ( the binding energy...

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  2. Atomic weight of boron is 10.81 and it has two isotopes .5 B^10 and .5...

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  3. Which of the following process represents a gamma- decay?

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  4. An alpha particle is bombarded on ^14N. As a result, a ^17O nucleus is...

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  5. A free neutron decays into a proton, an electron and

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  6. Nuclei X decay into nuclei Y by emitting alpha-aprticles. Energies of ...

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  7. In one average-life,

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  8. A freshly prepared radioactive source of half-life 2 h emits radiation...

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  9. Two isotopes P and Q atomic weight 10 and 20, respectively are mixed i...

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  10. Ten grams of ^57 Co kept in an open container beta-decays with a half-...

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  11. A overset(lambda)rarr B overset(2 lambda)rarr C T=0 ,N(0) , 0 , T...

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  12. The half - life of I ^ (131) is 8 days. Given a sample of I^(131) at ...

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  13. 92^(U^(235) mucleus absorbs a slow neutron and undergoes fission into ...

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  14. Two lighium .^(6)Li nuclei in a lithium vapour at room temperature do ...

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  15. In a uranium reactor whose thermal power is P=100 MW, if the average n...

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  16. Choose the statement which is true.

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  17. Fusion reaction takes place at high temperature because

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  18. In a fission reaction .92^236 U rarr ^117 X + ^117Y + n + n, the bindi...

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  19. A heavy nuleus having mass number 200 gets disintegrated into two smal...

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  20. Assuming that about 20 M eV of energy is released per fusion reaction ...

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