EM Waves — Set 3
Physics · विद्युत चुंबकीय तरंगें · Questions 21–30 of 50
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1
The SI unit of magnetic flux density B is?
2
If the wavelength of an EM wave in vacuum is doubled, its frequency becomes?
3
Polarization of a wave is possible only if the wave is?
4
When light enters glass from air, which quantity usually remains unchanged?
5
Which electromagnetic waves are commonly used in radar and many satellite links?
6
For a plane EM wave in vacuum, the magnetic field magnitude B is related to electric field magnitude E by?
7
The energy of a photon of frequency 5.0 × 10^14 Hz is closest to?
8
The intensity of an electromagnetic wave is proportional to?
9
In vacuum, the speed of electromagnetic waves is?
10
Which sequence correctly lists EM waves in increasing order of frequency?