Atoms and Nuclei-Half Life and Mean Life (AIIMS (All India Institute of Medical Sciences) Physics): Questions 1 - 6 of 8

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Question number: 1

» Atoms and Nuclei » Half Life and Mean Life

Appeared in Year: 2006

MCQ▾

Question

The fossil bone has a Equation ratio, which is Equation of that in a living animal bone. If the half-life of 14C is 5730 years, then the age of the fossil bone is –

Choices

Choice (4) Response

a.

22920 years

b.

11460 years

c.

45840 years

d.

17190 years

Question number: 2

» Atoms and Nuclei » Half Life and Mean Life

Appeared in Year: 2004

MCQ▾

Question

Carbon dating is best suited for determining the age of fossils if their age in years is of the order of –

Choices

Choice (4) Response

a.

104

b.

105

c.

106

d.

103

Question number: 3

» Atoms and Nuclei » Half Life and Mean Life

Appeared in Year: 2003

MCQ▾

Question

A radioactive substance decays to Equation of its initial activity in 40 days. The half-life of the radioactive substance expressed in days is –

Choices

Choice (4) Response

a.

5

b.

10

c.

20

d.

2.5

Question number: 4

» 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

Question number: 5

» 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

Question number: 6

» Atoms and Nuclei » Half Life and Mean Life

Appeared in Year: 1998

MCQ▾

Question

Half – life period of two radioactive substance are are 40 minute and 20 minute respectively, then after 80 minute ratio of the remaining nuclei will be – (Initially both have equal active nuclei) [AIPMT]

Choices

Choice (4) Response

a.

16: 1

b.

4: 1

c.

1: 2

d.

8: 1

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