Atoms and Nuclei (AIIMS (All India Institute of Medical Sciences) Physics): Questions 18 - 24 of 32

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Question number: 18

» Atoms and Nuclei » Radioactive Decay Law

MCQ▾

Question

A radioactive material has a half – life of 8 days. What fraction of the material would remain after 48 days –

Choices

Choice (4) Response

a.

0.156

b.

0.0625

c.

0.625

d.

0.0156

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Question number: 19

» Atoms and Nuclei » Composition and Size of Nucleus

MCQ▾

Question

The proposal that no more than two electrons may occupy a particular atomic orbital was made be –

Choices

Choice (4) Response

a.

Curie

b.

Pauling

c.

Pauli

d.

Einstein

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Question number: 20

» Atoms and Nuclei » Half Life and Mean Life

MCQ▾

Question

A radioactive substance decays to Equation of its initial activity in 20 days. The half-life of the radioactive substance expressed in days is –

Choices

Choice (4) Response

a.

2

b.

6

c.

8

d.

12

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Question number: 21

» Atoms and Nuclei » Radioactive Decay Law

MCQ▾

Question

A radioactive material has a half – life of 8 days. What fraction of the material would remain after 32 days –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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Question number: 22

» Atoms and Nuclei » Binding Energy Per Nucleon

MCQ▾

Question

If mass defect of an alpha particle is 0.05 amu, what is its binding energy per nucleon?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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Question number: 23

» Atoms and Nuclei » Radioactive Decay Law

MCQ▾

Question

A radioactive material has a half – life of 9 days. What fraction of the material would remain after 45 days –

Choices

Choice (4) Response

a.

0.03125

b.

0.625

c.

0.125

d.

0.0156

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Question number: 24

» Atoms and Nuclei » Half Life and Mean Life

MCQ▾

Question

A radioactive substance decays to Equation of its initial activity in 48 days. The half-life of the radioactive substance expressed in days is –

Choices

Choice (4) Response

a.

32

b.

8

c.

30

d.

16

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