Gamma Question Bank for Medical Physics>Chapter 30 - Nuclei>Assignment>Q 7

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If the nuclear radius of ${}^{64}X$ nucleus is $4.8$ fermi then the nuclear radius of ${}^{125}Y$ nucleus is

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Important Questions on Nuclei

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Gamma Question Bank for Medical Physics>Chapter 30 - Nuclei>Assignment>Q 9

There is a stream of radioactive material having

N_{0}

number of nuclei initially, moving with constant speed of

2500 m s^{- 1} .

If half life of material is

693 s

, then amount of material remain after they travel a distance of

2500 km

is

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Gamma Question Bank for Medical Physics>Chapter 30 - Nuclei>Assignment>Q 10

If activity of a radioactive substance is

R_{0}

at time

t = 0

and

\frac{R_{0}}{e^{2}}

at

t = 10

hours, then the time (in hours) at which the activity reduces to half

(\frac{R_{0}}{2})

of its initial value is

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Gamma Question Bank for Medical Physics>Chapter 30 - Nuclei>Assignment>Q 11

One atomic mass unit is equal to:

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Gamma Question Bank for Medical Physics>Chapter 30 - Nuclei>Assignment>Q 12

A nucleus at rest splits into two nuclei which move with speeds

v

and

27 v .

The ratio of the radii of two nuclei will be

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Gamma Question Bank for Medical Physics>Chapter 30 - Nuclei>Assignment>Q 13

The binding energy per nucleon for

{{}_{1}H}^{1}, {{}_{1}H}^{3}

and

{}_{2}{He}^{4}

are

a, b

and

c

respectively. Then energy released in a hypothetical nuclear reaction

{{}_{1}H}^{1} + {{}_{1}H}^{3} \to {}_{2}{He}^{4} +

energy is

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Gamma Question Bank for Medical Physics>Chapter 30 - Nuclei>Assignment>Q 14

If the mass of a radioactive sample is increased then, the activity and decay constant of the sample constant will

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Gamma Question Bank for Medical Physics>Chapter 30 - Nuclei>Assignment>Q 1

In nature, ratio of isotopes of Boron

{{}_{5}B}^{10}

and

{{}_{5}B}^{11},

is (given that atomic weight of boron is

10.81

)

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Gamma Question Bank for Medical Physics>Chapter 30 - Nuclei>Assignment>Q 2

The average binding energy per nucleon in the nucleus of an atom is approximately