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  • The equation of a Progressive wave can be given by <img alt="y=20 \sin (800 \pi t)-0.006 \pi x )" src="htt

The equation of a Progressive wave can be given by y=20 \sin (800 \pi t)-0.006 \pi x ). The frequency of the wave

Option: 1

300 Hz


Option: 2

600 Hz


Option: 3

400 Hz


Option: 4

200 Hz


Answers (1)

best_answer

y=A \sin (\omega t-k n) \\

 A=20               \omega \not t=800 \pi \not t \\

 w=800 \pi \\                 {[\because \omega=2 \pi f]} \\

2 \not \pi f=800 \not \pi \\

f=\frac{800}{2} \\

f=400 \mathrm{Hz}

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Rishi

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