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Wave Optics
Question
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Which of the following waves can be polarized (i) Heat waves (ii) Sound waves?

Answer

i) Heat waves can be polarized because they are transverse and electromagnetic in nature.

ii) Sound waves are longitudinal in nature and hence, cannot be polarized.

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Some More Questions From Wave Optics Chapter

Let us list some of the factors which could possibly influence the speed of wave propagation:
(i) nature of source.
(ii) direction of propagation. 
(iii) motion of source and/or observer.
(iv) wave length.
(v) intensity of the wave.
On which of these factors, if any, does
(a) the speed of light in vacuum,
(b) the speed of light in a medium (say, the glass or water) depend?