Question

A source of frequency 500 Hertz emits waves of wavelength $2m$. How long does it take the waves to travel $300m$ ?

• A. 75 s
• B. 60 s
• C. 12 s
• D. 3 s

Answer 1

The correct option is D 3 s

Since $v=n\lambda$
$v=500\times 2=100ms$
hence the time taken to travel
$=\frac{300}{100}=3seconds$.