A) Its amplitude is 4 cm
B) Its wavelength is 100 cm
C) Its frequency is 50 cycles/sec
D) Its propagation velocity is \[50\times {{10}^{3}}\] cm/sec
Correct Answer: D
Solution :
\[y=4\sin 2\pi \left( \frac{t}{0.02}-\frac{x}{100} \right)\]. Comparing this equation with \[y=a\sin 2\pi \left( \frac{t}{T}-\frac{x}{\lambda } \right)\] \[v=\frac{\text{Co-efficient of }t}{\text{Co-efficient of }x}=\frac{1/0.02}{1/100}\]
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