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What is the limit of frequency upto whic...

What is the limit of frequency upto which signals using sky waves can be transmitted?

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The correct Answer is:
1.5 MHz. to 40 MHz.
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FIITJEE-ELECTROMAGNETIC WAVE & WAVE OPTICS-ASSIGNMENT PROBLEMS(Subjective: Level-I)
  1. Name the electromagnetic radiations used for viewing the objects throu...

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  2. Give the ratio of velocities of light rays of wavelength 4000Å and 80...

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  3. What is the limit of frequency upto which signals using sky waves can ...

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  4. From which layer of atmosphere radio and microwaves are reflected back...

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  5. The waves used in telecommunication are

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  6. What oscillates in electromagnetic waves ?

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  7. What is the name given to the part of electromagnetic spectrum which i...

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  8. State two applications of ultraviolet radiation.

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  9. Find the wavelength of electromagnetic waves of frequency 6xx10^12Hz i...

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  10. In a plane electromagnetic wave, magnetic field oscillates with amplit...

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  11. Find energy stored in a 30 cm length of a laser beam operating at 6 mW...

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  12. Electromagnetic travel in a medium at a speed of 2.0xx10^8ms^-1. The r...

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  13. If wavelength of an electromagnetic waves in free space is 0.075m, fin...

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  14. The charging current for a capacitor is 0.25 A. What is the displaceme...

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  15. The amplitude of the magnetic field part of harmonic electromagnetic w...

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  16. A charged particle oscillates about its mean equilibrium position with...

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  17. Give the ratio of velocities of light rays of frequencies 5 xx 10^(12)...

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  18. Find the ratio of frequencies of light waves of wavelengths 4000 A and...

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  19. What is Maxwell displacement current?

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  20. Light can travel in vacuum whereas sound can not do so. Why?

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