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JEE MAIN 2021
20-07-2021 - S1
Question
A radioactive material decays by simultaneous emissions of two particles with half lives of 1400 years and 700 years respectively. What will be the time after the which one third of the material remains ? (Take ln 3 = 1.1)
Select the correct option:
A
1110 years
B
700 years
C
340 years
D
740 years
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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