Igcse Model Questions Vol1 2021 Physics Question 26

Practice objective / multiple choice question 26 from the 2021 Igcse Model Questions Vol1 Physics examination.

Igcse Model Questions Vol1 2021 Physics Objective / Multiple Choice Hard Difficulty
Question 26 IGCSE_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective

A sample contains two radioactive isotopes A and B that decay independently. Initially their activities are equal. After 10 minutes the activity of A is three times that of B. The half‑life of B is 5 minutes. Find the half‑life of A (in minutes) to the nearest minute.

Answer Options

Correct Answer A. 24 minutes
B. 20 minutes
C. 28 minutes
D. 32 minutes
Correct Answer
A
Correct Option:
24 minutes

About This Question

This is Igcse Model Questions Vol1 2021 Physics Question 26. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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