What is the relation between the half-life and the radioactive decay constant ?

Answer and explanation

Correct answer: B.

  1. Step 1: The radioactive decay law is .
  2. Step 2: At the half-life , the remaining fraction is .
  3. Step 3: Equating gives .
Answer
.
Why not the others: inverts the formula; is the mean lifetime ; multiplies instead of dividing.

Practise more Modern physics and semiconductors.

Free questions with an explanation for every one, and full timed JEE Main mock tests.