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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 v = 1 / √(μ0ε0). In the light of the above statements, choose the correct answer from the options given below.

1. Both statement I and statement II are true
2. Both statement I and statement II are false
3. Statement I is correct but statement II is false
4. Statement I is incorrect but statement II is true

Correct answer: Statement I is correct but statement II is false

Solution

Statement I accurately describes the relationship between electric and magnetic fields in the context of electromagnetic waves, highlighting how changes in one field induce changes in the other. However, Statement II is incorrect because the speed of electromagnetic waves in a vacuum is given by v = c = 1 / √(μ0ε0), and this formula does not apply in a material medium where the speed is affected by the medium's properties.

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