Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6
Banner 7
Banner 8
Banner 9

Q.

The half life of a radioactive sample undergoing α – decay is 1.4×1017 s. If the number of nuclei in the sample is 2.0×1021,the activity of the sample is nearly

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya

a

103 Bq

b

104 Bq

c

105 Bq

d

106 Bq

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

The activity (A) is defined as the rate of decay of radioactive substance.A=−dNdt=NλA=N×0.693T [T is half life ]A=2×1021×0.6931.4×1017A=104Bq
Watch 3-min video & get full concept clarity
score_test_img

courses

No courses found

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
personalised 1:1 online tutoring
The half life of a radioactive sample undergoing α – decay is 1.4×1017 s. If the number of nuclei in the sample is 2.0×1021,the activity of the sample is nearly