The magnetic field in a plane electromagnetic wave is given…

Physics Electromagnetic Wave General MCQ (Single Correct)

The magnetic field in a plane electromagnetic wave is given by B y = 2 × 10 –7 sin (0.5 × 10 3 x + 1.5 × 10 11 t). This electromagnetic wave is

A visible light

An infrared wave

A microwave

A radio wave

Text Solution

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The correct answer is:

Sol. k = 0.5 × 10 3

c =

3 × 10 8 =

k =

⇒ λ = 188.4 m

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