A wave in a string has an amplitude of 2 cm. The wave travels in the +ve direction of x axis with a speed of 128 m/sec and it is noted that 5 complete waves fit in 4 m length of the string. The equation describing the wave is

Question:

Options :

a) y = (0.02) m sin (7.85 x +1005 t)
b) y = (0.02) m sin (15.7 x-2010t)
c) y=(0.02) m sin (15.7x+2010t)
d) y=(0.02) m sin (7.85 x-1005 t)

Answer :

d) y=(0.02) m sin (7.85 x-1005 t)

Answer Steps :

Step:-1

Step:-2

Step:-3

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