JAMB Physics 2025 Objective — Question 33
Question 33 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2025 Objective paper, with the correct answer and a full explanation.
Advertisement
Half-life of a radioactive isotope is 3 hours. Fraction remaining after 9 hours:
- A. 1/8Correct
- B. 1/9
- C. 1/27
- D. 1/32
Explanation
n=9/3=3 half-lives; fraction=(1/2)³=1/8.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.