Sound WavesHard
Question
A sinusoidal progressive wave is generated in a string. It′s equation is given by y = (2mm) sin (2πx - 100 πt + π/3). The time when particle at x = 4 m first passes through mean position, will be : -
Options
A.
B.
C.
D.
Solution
y = 2mm sin 
⇒ 0 = 2 sin
⇒ nπ = 8π - 100πt +
(n = 0, 1, 2, 3, ....)
⇒ tmin =
/ 100π = 
⇒ 0 = 2 sin
⇒ nπ = 8π - 100πt +
(n = 0, 1, 2, 3, ....)⇒ tmin =
/ 100π = Create a free account to view solution
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