The equation of wave is given by y = 10 sin ( 30 2 π t + α ) . If the displacement is 5 cm at t = 0 , then the total phase angle at t = 7.5 s will be

y = 10 sin ( 30 2 π t + α ) At t = 0 , y = 5 cm 5 = 10 sin α α = 6 π At t = 7.5 , the total phase ϕ = 30 2 π × 7.5 + α = 2 π + 6 π = 3 2 π rad

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Physics - Wave on String Question with Solution | TestHub

PhysicsWave on StringEquation/graphMedium2 minPYQ_2021

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The equation of wave is given by $y = 10 sin (\frac{2 π t}{30} + α)$ . If the displacement is $5 cm$ at $t = 0$ , then the total phase angle at $t = 7.5 s$ will be

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$y = 10 sin (\frac{2 π t}{30} + α)$ At $t = 0, y = 5 cm$ $5 = 10 sin α$ $α = \frac{π}{6}$ At $t = 7.5$ , the total phase $ϕ = \frac{2 π \times 7.5}{30} + α = \frac{π}{2} + \frac{π}{6} = \frac{2 π}{3} rad$

Stream:MHT_CETSubject:PhysicsTopic:Wave on StringSubtopic:Equation/graph

⏱ 2mℹ️ Source: PYQ_2021

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