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Question:
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Among the following, the equation representing a progressive wave is
(A) $y=2 \cos 3 x \sin 10 t$
(B) $\mathrm{y}=2 \sqrt{\mathrm{x}-\mathrm{vt}}$
(C) $y=3 \sin (5 x-0.5 t)+4 \cos (5 x-0.5 t)$
(D) $y=\cos x \sin t+\cos 2 x \cdot \sin 2 t$
Options:
(A) $y=2 \cos 3 x \sin 10 t$
(B) $\mathrm{y}=2 \sqrt{\mathrm{x}-\mathrm{vt}}$
(C) $y=3 \sin (5 x-0.5 t)+4 \cos (5 x-0.5 t)$
(D) $y=\cos x \sin t+\cos 2 x \cdot \sin 2 t$
Solution:
2130 Upvotes
Verified Answer
The correct answer is:
$\mathrm{C}$
Only equation C follows standard wave condition
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