For a certain sinusoidal wave of intensity I, the amplitude of the magnetic field is B. What
would be the amplitude (in terms of B) in a similar wave of twice the intensity?
B∼I2,B\sim I^2,B∼I2,
B1B=(2I)2I2,\frac{B_1}B=\frac{(2I)^2}{I^2},BB1=I2(2I)2,
B1=4B.B_1=4B.B1=4B.
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