NEET-UG SERIES Physics
Radioactivity
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
2
2018 1
2017 1
2013 Chapter Questions 4 MCQs
01
PYQ 2013
medium
physics ID: neet-ug-
The half life of a radioactive isotope 'X' is 20 years. It decays to another element 'Y' which is stable. The two elements 'X' and 'Y' were found to be in the ratio 1 : 7 in a sample of a given rock. The age of the rock is estimated to be
1
40 years
2
60 years
3
80 years
4
100 years
02
PYQ 2017
medium
physics ID: neet-ug-
Radioactive material 'A' has decay constant '8λ' and material 'B' has decay constant 'λ'. Initially they have same number of nuclei. After what time, the ratio of number of nuclei of material 'B' to that 'A' will be ?
1
2
3
4
03
PYQ 2018
medium
physics ID: neet-ug-
For a radioactive material, half-life is 10 minutes. If initially there are 600 number of nuclei, the time taken (in minutes) for the disintegration of 450 nuclei is
1
20
2
30
3
10
4
15
04
PYQ 2018
medium
physics ID: neet-ug-
When the light of frequency 2v0 (where v0 is threshold frequency), is incident on a metal plate, the maximum velocity of electrons emitted is v1 . When the frequency of the incident radiation is increased to 5v0 , the maximum velocity of electrons emitted from the same plate is v2 . The ratio of v1 to v2 is
1
1:2
2
4:1
3
1:4
4
2:1
About Radioactivity - NEET-UG
Radioactivity is a vital chapter for NEET-UG aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Radioactivity PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Radioactivity carry the most weight. Then, tackle the questions iteratively to solidify your understanding.