NEET Physics Question - Electromagnetic Waves

Assertion (A): Electromagnetic waves cannot penetrate through a perfect conductor and hence are totally reflected.

Reason (R): The speed of electromagnetic waves in any dielectric medium is less as compared to vacuum.

Both (A) \(&\) (R) are true and the (R) is the correct explanation of the (A)

Both (A) \(&\) (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

A perfect conductor contains free charges that rapidly reorient to cancel the incident electric field, causing total reflection. The speed of EM waves in a dielectric is slower than in vacuum due to the interaction with the medium's polarization. Both statements are true, but R does not explain A.

Rankers Physics

Electromagnetic Waves and Conductors

Solution:

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