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Half Life (in Hindi)
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In this lesson, Vikas has discussed Half Life.

Vikas Joshi
Consultant at Capgemini, Inquisitive in nature, PGDM from FSM, Delhi. Love to teach. Can discuss anything under the sun.

Unacademy user
mam you only read the line not explain it
sir iske phle ke course kase milenge.plz btaiye
Vikas Joshi
a year ago
search Vikas Joshi iit jee and you will see my profile, open it and enjoy all courses
superb nice sir maja aa gya
Vikas Joshi
2 years ago
thanks Sudarshan
Vikas Joshi
2 years ago
Anytime Kushagra
  1. About Me B.Tech in Computer Science Engineering. . Worked for Salesforce, Cognizant. PGDM from FSM, New Delhi. Reading enthusiast. Loves to teach. .Helped a number of students to clear exams like JEE, NEET and CAT. Can discuss anything under the sun.

  2. Half Life and Mean Life Part 1

  3. oole

  4. 2 2.

  5. There are two radioactive substances A and B. Decay constant of B is two times that of A. Initially both have equal number of nuclei. After n half lives of A rate of disintegration of both are equal. The value of n is (a) 1 (c) 4 (b) 2 (d) All of these

  6. No 0 No 0 2 No No ( ) 2 A No

  7. Let ,- and ,-2 Initially rate of disintegration of A is N0 and that of B is 2ANO. After one half-life of A, rate of disintegration of A will becomes N0/2 and that of B would also be N0/2 (half-life of B = half-life of A). So, after one half-life of A or two half-lives of B. (- dN/dt)(- dN/dt) Thus, n1 From the above observation we conclude that, option (a) is correct.

  8. A count rate-meter is used to measure the activity of a given sample. At one instant the meter shows 4750 counts per minute. Five minutes later it shows 2700 counts per minute. Find: (a) Decay constant (b) The half-life of the sample