Physics MCQs

Page No. 40

Average energy required to remove one nucleon from the nucleus is called__________________?


aBinding energy per nucleon

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bEnergy of decay

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c Destruction energy

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d All of above

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Radioactive decay obeys which one of the following law ?


a N=Noe-λt

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bN=Noeλt

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cN=Noe-λt/2

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dNo=N(1+eλt)

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View Answer N=Noe-λt

The diameter of an atom is approximately_______________?


a10-12m

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b10-11m

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c10-10m

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d10-14m

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View Answer 10-10m

The bombardment of nitrogen with alpha particles will produce______________?


aNeutron

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bProton

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cElectron

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dPositron

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View Answer Proton

Mass defect per nucleon is ___________________?


aThe binding energy of the nucleus

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bPacking fraction

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cThe average energy of the nucleus

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dAll of above are one and the same thing

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View Answer Packing fraction

Nuclear forces exist between ___________________?


aProton-proton

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bProton-neutron

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cNeutron-neutron

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dAll of the above

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View Answer All of the above

Transuranic elements have an atomic number_______________?


aGreater than 72

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bGreater than 82

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c Greater than 92

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dGreater than 102

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View Answer Greater than 92

The energy liberated when one atom of U-235 undergoes fission reaction is________________?


a200MeV

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b40MeV

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c 30MeV

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d20MeV

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View Answer 200MeV

Radioactivity is a ______ (A) Spontaneous activity (B) Chemical property_____________?


aA & B

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bB & C

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cC & A

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dA B & C

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View Answer C & A

Electrons_________________?


aCan exist inside the nucleus

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bCannot exist inside the nucleus

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cCan exist both inside and outside the nucleus

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dDo not know

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View Answer Do not know

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