Physics MCQs

Page No. 38

Various types of cancer are treated by_________________?


aCobalt-60

✓


bStrontium-90

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cCarbon-14

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dNickel-63

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View Answer Cobalt-60

Which of the following radiations are suitable for the treatment of an infection in the interior of the body ?


aα-rays

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bβ-rays

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cγ-rays

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d X-rays

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View Answer γ-rays

The path of alpha particle is_______________?


aRectilinear

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bCurved

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cZig-zag or erratic

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d Elliptical

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View Answer Zig-zag or erratic

During an encounter with an atom alpha particle knocks out ______________?


a Protons

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bElectrons

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cNeutrons

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dNothing

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View Answer Electrons

Pair production takes place in the vicinity of a heavy nucleus so that_____________?


a Net energy is conserved

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bNet charge is conserved

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c Net momentum is conserved

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dAll of the above

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View Answer All of the above

If one or more of the neutrons emitted during fission cab be used to build up further fission then the reaction is self-sustained and is known as __________________?


aFission reaction

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b Fusion reaction

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cChain reaction

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dChemical reaction

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View Answer Chain reaction

Radioactive materials can be identified by measuring their_______________?


aHardness

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bDensity

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cMass

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dHalf life

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View Answer Half life

Ina liquid metal fast breeder reactor, the type of uranium used is______________?


a 92U235

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b 92U238

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c92U234

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d92U239

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View Answer 92U238

During the fission process a large amount of______________?


aHeat energy is released

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bNuclear energy is released

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cChemical energy is released

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d Light energy is released

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The unit of radioactivity curie is equal to________________?


a3.74 x 109 disintegration per sec

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b3.70 x 1010 disintegration per sec

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c3.55 x 1010 disintegration per sec

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d3.60 x 1010 disintegration per sec

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