Unit 12 · Electromagnetic Spectrum
15 randomly selected questions from a bank of 60 · one attempt · 15 minutes on the clock.
Topics covered
- Dispersion of light — the action of a glass prism, the VIBGYOR spectrum, and dispersion through water droplets (rainbows)
- The speed of electromagnetic waves, and the characteristics common to all electromagnetic waves
- The main components of the electromagnetic spectrum, from radio waves to gamma rays
- Radio waves and microwaves — radio/TV communication, MRI, satellite telephone and television
- Infra-red — household electrical appliances, TV remote controllers, and intruder alarms
- Visible light and optical fibers, and ultra-violet radiation — sunbeds, fluorescent tubes, and sterilization
- X-rays and gamma rays — medical imaging, cancer therapy, and engineering applications such as crack detection
Please fill in your name, class and roll/GR# to start the quiz.
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Answer Review — Step by Step Solutions
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All attempts on this device, stored locally with a unique session ID.
| # | Name | Class | Roll/GR# | Correct | % | Status | Date |
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