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Physics Quizzes , Questions & Answers

Recent Physics Quizzes

The International General Certificate of Secondary Education(IGCSE) is an examination developed by the University of Cambridge International Examinations. This quiz has been designed for students to test their knowledge about the...

Questions: 10 | Attempts: 10166 | Last updated: Oct 21, 2025

Sample Question
The half-life of a Radioactive substance is 5 hours. A sample is tested and found to contain O.48g of the substance. How much of the substance was present in the sample 20 hours before the sample was tested?

0.03

7.68

0.12

1.92

3.76

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