Gamma Question Bank for Engineering Physics>Chapter 29 - Nuclei>Assignment>Q 3

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A nitrogen nucleus ${}_{7}^{14}N$ absorbs a neutron and can transform into lithium nucleus ${}_{3}^{7}{Li}$ under suitable conditions, after emitting -

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Important Questions on Nuclei

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Gamma Question Bank for Engineering Physics>Chapter 29 - Nuclei>Assignment>Q 4

Which of the following processes does not represent a gamma decay?

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Gamma Question Bank for Engineering Physics>Chapter 29 - Nuclei>Assignment>Q 5

Which of the following is correct for a nuclear reaction ?

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Gamma Question Bank for Engineering Physics>Chapter 29 - Nuclei>Assignment>Q 6

The decay constant of a radioactive substance is

λ

. At

t = 0

, the number of active nuclei are

N_{0}

. Select the correct alternative

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Gamma Question Bank for Engineering Physics>Chapter 29 - Nuclei>Assignment>Q 7

Radioactive nuclei are being generated at a constant rate by some kind of nuclear reaction. If the decay constant for the radioactive nuclei is

λ

, which of the following graphical representation is correct? (initially, there are no radioactive nuclei present)

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Gamma Question Bank for Engineering Physics>Chapter 29 - Nuclei>Assignment>Q 8

The count rate of a radioactive sample was

1600 count s^{- 1}

at

t = 0

and

100 count s^{- 1}

at

t = 8 s .

Select the correct alternatives

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Gamma Question Bank for Engineering Physics>Chapter 29 - Nuclei>Assignment>Q 9

Disintegration consicrit of a radioactive material is

λ

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Gamma Question Bank for Engineering Physics>Chapter 29 - Nuclei>Assignment>Q 10

The probability of disintegration per second of a nucleus in a given radio-active sample

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Gamma Question Bank for Engineering Physics>Chapter 29 - Nuclei>Assignment>Q 11

The variation of decay rate of two radioactive samples A and B with time is shown in figure. Which of the following statements are true?

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