Solve Study Textbooks Guides

Use app

Login

>>Class 12
>>Physics
>>Nuclei
>>Introduction to Radioactivity
>> $The t 1/2 of a radioactive substance is$

Question

The $t$ $_{1 / 2}$ of a radioactive substance is $100 s e c$ . Its decay constant is:

A

$6.93 \times 10$ $^{- 3} s e c^{- 1}$

B

$6.93 \times 10$ $^{- 2} s e c^{- 1}$

C

$6.93 \times 10$ $^{- 1} s e c^{- 1}$

D

$6.93 \times 10$ $^{- 4} s e c^{- 1}$

Medium

Open in App

Updated on : 2022-09-05

Solution

Verified by Toppr

Correct option is A)

$t_{1 / 2} = 100 s e c$

$λ = \frac{l n 2}{t _{1 / 2}} = \frac{0 . 6 9 3}{1 0 0}$ $= 0.00693 s e c^{- 1}$

Was this answer helpful?

0

0

Similar questions

If the decay constant of a radioactive nuclide is $6.93$ x $10$ $^{- 3}$ sec $^{- 1}$ , its half life in minutes is:

The decay constant of a radioactive substance is $0.173$ $y e a r s^{- 1} .$ Therefore,

This question has multiple correct options

The decay constant of a radioactive substance is $0.173$ $y e a r^{- 1}$ . Therefore

This question has multiple correct options

The activity of a nuclide is $15$ millicurie. If its decay constant is $0.005$ sec $^{- 1}$ , the number of atoms present in it is

Reciprocal of radioactive decay constant is

More From Chapter

View chapter >

Revise with Concepts

Discovery of Radiation

ExampleDefinitionsFormulaes

Introduction to Radioactivity

ExampleDefinitionsFormulaes

Alpha, Beta and Gamma Emission

ExampleDefinitionsFormulaes

Differentiate Between Alpha, Beta and Gamma Radiations

ExampleDefinitionsFormulaes

Background Radiations

ExampleDefinitionsFormulaes

View more

Learn with Videos

Radioactive Decay and its types

Artificial radioactivity and application of radioactivity

Radioactivity - Emission of Alpha,Beta and Gamma Radiations

Practice more questions

Medium Questions