MCQ
Which of the following are electromagnetic waves?
- A$\alpha-\text{decay}$
- B$\beta^+-\text{decay}$
- C$\beta^--\text{decay}$
- ✓$\gamma-\text{decay}$
✓
Answer
Correct option: D.
$\gamma-\text{decay}$
Alpha rays, beta$-$plus and beta$-$minus rays carry charged particles that show particle behaviour. On the other hand, gamma rays carry photons that show particle as well as wave behaviour. Hence, only gamma rays are electromagnetic waves.
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