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A radioactive β –emission. A detector records n β –particles in 2s and by next 2s (accumulatively) it records 1.1 n β –particle. Number of β –particles recorded by detector after a long time, is

Option 1 -

11n/10

Option 2 -

12n/10

Option 3 -

2n

Option 4 -

10n/9

0 1 View | Posted 4 weeks ago
Asked by Shiksha User

Similar Questions for you

Determine the number of nuclei that will be decayed upto one average life of radioactive material? (N0 : Initial number of nuclei)

 
A
alok kumar singh

N = N0e–λt

->t = λN = N0/e

So number of nuclei decayed = N0 – N

= N0 (1- 1/e) 

Density of nucleus is of the order of
A
alok kumar singh

Density of nuclei is order of 1017 kg m–3.

Power factor of series LCR circuit at resonance is
A
alok kumar singh

Kindly go through the solution '

 

Density of nucleus is of the order of
V
Vishal Baghel

Density of nuclei is order of 1017 kg m-3.

Two radioactive substances X and Y originally have N1 and N2 nuclei respectively. Half life of X is half of the life of Y. After three half lives of Y, number of nuclei of both are equal.

The ratio  N 1 N 2  will be equal to:
V
Vishal Baghel

Number of half lives of Y = 3

Number of half lives of X = 6 [As half life of X is half of that of Y].

N 1 2 6 = N 2 2 3 ⇒ N 1 N 2 = 8

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