BITSAT SERIES Physics
Decay Rate
2 previous year questions.
Volume: 2 Ques
Yield: Medium
High-Yield Trend
1
2021 1
2015 Chapter Questions 2 MCQs
01
PYQ 2015
medium
physics ID: bitsat-2
In an ore containing uranium, the ratio of to is . Calculate the age of the ore, assuming that all the lead present in the ore is the final stable product of . Take the half-life of to be yr.
1
yr
2
yr
3
yr
4
yr
02
PYQ 2021
medium
physics ID: bitsat-2
After two hours, one-sixteenth of the starting amount of a certain radioactive isotope remained undecayed. The half life of the isotope is
1
15 minutes
2
30 minutes
3
45 minutes
4
4 hours