JEE Main 2022 Physics question
Given below are two statements: Statement I : A time varying electric field is a source of changing magnetic field and vice-versa. Thus a disturbance in electric or magnetic field creates EM waves. Statement II : In a material medium, the EM wave travels with speed . In the light of the above statements, choose the correct answer from the options given below.
Answer: (3)
Solution
Statement I is correct. In a material medium the speed of an electromagnetic wave is \sqrt${ε
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