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Physics
For an electromagnetic wave, which of the following statementsis true ?
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Q. For an electromagnetic wave, which of the following statementsis true ?
COMEDK
COMEDK 2014
Electromagnetic Waves
A
Electric field is constant and magnetic field varies.
13%
B
Magnetic field is constant and electric field varies.
13%
C
Both electric and magnetic fields are constant.
42%
D
Both electric and magnetic fields vary.
31%
Solution:
In an electromagnetic wave, both electric and magnetic fields oscillate sinusoidally in space and time.