COMEDK-UGET SERIES Physics
Half Life
1 previous year questions.
Volume: 1 Ques
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2021 Chapter Questions 1 MCQs
01
PYQ 2021
medium
physics ID: comedk-u
Ba-122 has half-life of 2 min. Experiment has to be done using Ba-122 and it takes 10 min to set up the experiment. It initially had 80 g of Ba-122. How much Ba-122 was left when the experiment started?
1
2.5 g
2
5 g
3
10 g
4
20 g