A) travelling with a velocity of 100 m/s in the negative\[x-\]direction
B) travelling with a velocity of\[\frac{50}{\pi }\] m/s in the positive\[x-\]direction
C) of wavelength 1m
D) of frequency\[\frac{100}{\pi }\]Hz
Correct Answer: A
Solution :
The standard equation of a wave, travelling with amplitude a in the negative\[x-\]direction with angular velocity co is given by \[y=a\sin (\omega t+kx)\] ...(i) where,\[k\]is wave number. Given equation of wave is \[y=0.001\,\sin (100t+x)\] ?(ii) Comparing Eqs. (i) and (ii), we get \[v=\frac{\omega }{k}=\frac{100}{1}\] \[=100m/s\]
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