NEET Physics: Electromagnetic Waves — Practice Set 14

Q1. What does Gauss's Law for magnetism imply in Maxwell's equations?

Q2. Why are infrared waves important for maintaining Earth's average temperature?

Q3. Why can’t one get tanned through ordinary glass windows?

Q4. What is the frequency range of the FM radio band?

Q5. Why do welders wear special glass goggles during welding?

Q6. What is one technological importance of electromagnetic waves mentioned in the document?

Q7. Why are microwaves suitable for use in radar systems?

Q8. Why can't visible light electromagnetic waves be produced by an oscillating circuit at \( 6 \times 10^{14} \, \text{Hz} \)?

Q9. Infrared waves contribute to Earth's warmth through which effect?

Q10. An electromagnetic wave in vacuum has a frequency of \( 20 \, \text{MHz} \). What is its wavelength? (Given \( c = 3 \times 10^8 \, \text{m/s} \))

Physics — Electromagnetic Waves

Set 14 of 24

15:00

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What does Gauss's Law for magnetism imply in Maxwell's equations?