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The displacement y of a particle in a medium can be expressed as: $y = 10^{- 6} \sin (100 t + 20 x + π / 4) m,$ where t is in second and x in meter. The speed of wave is

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2000 m/s

5 m/s

20 m/s

5π m/s

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detailed solution

Correct option is B

v=Co−efficent of tCo−efficent of x=ωk=10020=5 m/s.

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The displacement y of a particle in a medium can be expressed as: y=10−6sin(100t+20x+π/4)m, where t is in second and x in meter. The speed of wave is

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Ready to Test Your Skills?

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The displacement y of a particle in a medium can be expressed as: $y = 10^{- 6} \sin (100 t + 20 x + π / 4) m,$ where t is in second and x in meter. The speed of wave is