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1.
Which of the following electromagnetic waves is used in medicine to destroy cancer cells?
2.
The ultra high frequency band of radio waves in electromagnetic wave is used as in
3.
A charged particle oscillates about its mean equilibrium position with a frequency of 109 Hz. The frequency of electromagnetic waves produced by the oscillator is
4.
If E and B denote electric and magnetic fields respectively, which of the following is dimensionless?
5.
Which of the following has/have zero average value in a plane electromagnetic wave?
6.
Which of the following statement is false for the properties of electromagnetic waves?
7.
An electromagnetic wave can be produced, when charge is
8.
The conduction current is same as displacement current when source is
9.
If a variable frequency ac source is connected to a capacitor then with decrease in frequency the displacement current will
10.
