In a radioactive disintegration, the rat...

In a radioactive disintegration, the ratio of initial number of atoms to the number of atoms present at an instant of time equal to its mean life is

A

`1/e^2`

B

`1/e`

C

e

D

`e^2`

Text Solution

Verified by Experts

The correct Answer is:

C

Topper's Solved these Questions

NTA NEET SET 71
NTA MOCK TESTS|Exercise PHYSICS|45 Videos
NTA NEET SET 73
NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

The rate of disintegration of a radioactive substance is …………………………… to the number of atoms present at that time .

The rate of disintegration at a given instant, is directly proportional to the number of atoms present at that instant. This is the statement of

The number of atoms present in a molecule of an element is known as its

Atomic number is always equal to the number of electrons present in an atom. True/False explain.

Is atomic number of an atom alwayus equal to the number of electons?

The number of atoms present in a molecule of a substance is called its_______

For a radioactive sample, determine the ratio of the number of atoms decays of during the first half of its half- life to the number of atoms decays of during the second half of its half cycle.

The half-life of a radioactive sample A is same as the mean life of sample B. The number of atoms present initially in both the samples is same.

A radioactive element disintegrates for a time interval equal to its mean life. The fraction that has disintegrated is

NTA MOCK TESTS-NTA NEET SET 72-PHYSICS

The normal reaction on a body placed in a lift moving up with constant...
Text Solution
|
One microgram of matter converted into energy will give.
Text Solution
|
In a radioactive disintegration, the ratio of initial number of atoms ...
Text Solution
|
A particle of mass 3 kg , attached to a spring with force constant 48N...
Text Solution
|
A point performs simple harmonic oscillation of period T and the equat...
Text Solution
|
Huygen's wave theory of light could not explain
Text Solution
|
At its closet approach, the distance between the mars and the earth is...
Text Solution
|
A block of wood floats in freshwater with two - third of its volume su...
Text Solution
|
An ideal fluid flows through a pipe of circular cross - section with d...
Text Solution
|
An astronomical telescope has an angular magnification of magnitude 5 ...
Text Solution
|
A compound microscope having magnifying power 35 with its eye - piece ...
Text Solution
|
When a celling fan is switched off, its angular velocity falls to half...
Text Solution
|
If a body is lying in the Y-Z plane, then according to theorem of perp...
Text Solution
|
With forward biased mode, the p-n junction diode
Text Solution
|
A transistor is used as an amplifier in CB mode with a load resistance...
Text Solution
|
The total kinetic energy of a mixture of 4 g of H2 and 4g of He at 300...
Text Solution
|
The S.I. unit of specific heat capacity is
Text Solution
|
In a Young's double slit experiment, the fringe width is found to be 0...
Text Solution
|
In a double slit experiment, the distance between slits in increased t...
Text Solution
|
If the end correction of an open pipe is 0.8 cm, then the inner radius...
Text Solution
|