The displacement y of a particle in a medium can be expressed as : y= 10-6 sin[100t+20x + π4] m, where t is in second and x in meter. The speed of wave is
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a
2000 m/s
b
5 m/s
c
20 m/s
d
5π m/s
answer is B.
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Detailed Solution
v = Co-efficient of tCo-efficient of x = ωk = 10020 = 5 m/s