What is the primary source of ultraviolet radiation mentioned in the document?

The document states that the sun is an important source of ultraviolet light, though much of it is absorbed by the ozone layer.

Why are radio waves used in GPS systems?

Radio waves can travel long distances through the atmosphere and are less affected by weather, allowing satellites to transmit precise timing signals for GPS positioning.

NEET Physics: Electromagnetic Waves — Practice Set 13 (10 MCQs)

Physics — Electromagnetic Waves

Set 13 of 24

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What is the approximate frequency range of microwaves used in radar systems?

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NEET Physics: Electromagnetic Waves — Practice Set 13

Q1. What is the approximate frequency range of microwaves used in radar systems?

Q2. What is the primary source of ultraviolet radiation mentioned in the document?

Q3. Why are radio waves used in GPS systems?

Q4. Gamma rays are produced by which of the following processes?

Q5. Why does the concept of displacement current become essential in understanding electromagnetic wave propagation in free space?

Q6. What type of electromagnetic waves were produced and observed by Jagdish Chandra Bose in his experiments?

Q7. Which frequency range corresponds to the AM radio band as per the document?

Q8. Why are infrared waves used in thermal imaging devices?

Q9. What is the approximate wavelength range of visible light according to the document?

Q10. What does the introduction of displacement current by Maxwell explain about electromagnetic phenomena?