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Which of the following cocepts applies to both sound waves and electromagnetic wave: (a)Polarisation and (b) intensity? Explain the same. |
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Answer» Solution :Sound wave are longitudnal waves WHEREAS electromegnetic wave are TRANSVERSE waves. The concept of polarisation APPLIES only to electromagnetc wave and not to sound waves because a wave is said to be polarised when its VIBRATIONS or oscillations are restricted in a perticular direction perpendicular to wave propagation, which is possible for transeverse wave and not for longitudnal wave. The concept of intensity applies to both, sound waves and electromagnetic waves. In case of sound waves, the intensity is related to the amplitude of pressure variation whereas in the case of electromagnetic waves, it related to the amplitude of oscillating electric or magnetic FIELD. |
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