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The decay constant of a radioactive sub...

The decay constant of a radioactive substance is` 0.173 year^(-1)`. Therefore,

A

Nearly 63% of the radioactive substance will decay in 1/0.173 year

B

Half life of the radioactive substance is 1/0.173 year

C

One fourth of the radioactive substance will be left after nearly 8 years

D

All the above statements are true

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The correct Answer is:
A, C
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RESNICK AND HALLIDAY-THE NUCLEUS-PRACTICE QUESTIONS (More than One Correct Choice Type)
  1. The mass number of a nucleus of an element is

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  2. If A,Z and N denote the mass number, the atomic number, and the neutro...

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  3. The decay constant of a radioactive substance is 0.173 year^(-1). The...

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  4. Which of the following statements are correct?

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  5. A radioactive sample has initial concentration N(0) of nuclei. Then,

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  6. Assume that the nuclear binding energy per nucleon (B/A) versus mass n...

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  7. From the following equations, choose the possible nuclear reactions

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  8. In the options given below, let E denote the mass energy of a nucleus ...

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  9. If m(p) and m(n) are masses of proton and neutron respectively and M(1...

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  10. Which of the following are evidences for the existence of neutrons in ...

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  11. The instability of the nucleus can be due to various causes. An unstab...

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  12. A fraction f(1) of a radioactive sample decays in one mean lie and a f...

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  13. A large population of radioactive nucleus starts disintegrating at t=0...

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  14. In beta-decay, the Q-value of the process is E. Then

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  15. Consider the following nuclear reactions and select the correct statem...

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  16. The essential distinction between X - rays and gamma - rays is that

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  17. When nucleus of an electrically neutral atom undergoes a radioactive d...

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  18. Which of the following is an assumption in Carbon dating process?

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  19. Both under fission and nuclear fusion release enormus energy. When a u...

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  20. The total binding energy of an alpha particle (""(2)^(4)He) is 24.4 Me...

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