The electromagnetic spectrum Quiz
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5 questions, one answer each
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1. Which EM wave has the highest frequency?
- A. X-rays
- B. Ultraviolet
- C. Gamma rays
- D. Microwaves
2. What is the speed of all EM waves in a vacuum?
- A. 3 × 10⁸ m/s
- B. 340 m/s
- C. 3 × 10⁶ m/s
- D. It depends on the frequency
3. A microwave has a frequency of 1.5 GHz (1.5 × 10⁹ Hz). What is its wavelength?
- A. 0.5 m
- B. 5 m
- C. 0.02 m
- D. 0.2 m
4. Which EM wave can cause skin cancer?
- A. Radio waves
- B. Ultraviolet
- C. Visible light
- D. Infrared
5. Which wave is used in a television remote control?
- A. Radio waves
- B. X-rays
- C. Infrared
- D. Gamma rays