Sound WavesMediumBloom L3
Question
A sound waves is travelling towards right and its S-t graph is as shown for x = 0.
Choose CORRECT matching of the graphs
(i) 
(ii) 
(iii) 
(iv) 
Options
A.Graph (i) shows P–t for x = 0 and graph (iv) shows P – x at t = 0
B.Graph (iii) shows P–t for x = 0 and graph (iii) shows P – x at t = 0
C.Graph (iv) shows P–t for x = 0 and graph (i) shows P – x at t = 0
D.Graph (ii) shows P–t for x = 0 and graph (ii) shows P – x at t = 0
Solution
Sol. S = S0 sin (ωt – Kx)
⇒ ∆ P = $- \frac{B\partial S}{\partial x}$ = + BS0K cos (ωt – Kx)
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