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Class 12 Physics Practice Test: Electromagnetic Waves
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Class 12 Physics Practice Test: Electromagnetic Waves
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8 Questions

1. Which basic oscillatory circuit is used these days to produce electromagnetic waves?
2. For which frequency of light, the human eye is most sensitive?
3. What is the time period of visible light for which human eye is most sensitive?
4. Is the ratio of frequencies of UV rays and IR rays in the glass more than, less than or equal to 1?
5. If the wavelength of electromagnetic radiation is doubled, what will happen to the energy of photons?
6. What is the velocity of electromagnetic wave in free space?
7. What is the ratio of the speed of infrared and ultraviolet rays in a vacuum?
8. Microwaves can’t be used for long-distance transmission of signals.

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