Question

If the speed of a wave is $340m/s$ and its frequency is $1700Hz,$ then $\lambda$ for this wave in cm will be:

• A. $2$
• B. $0.2$
• C. $20$
• D. $200$

Answer 1

The correct option is C $20$

We know

$V=f\times \lambda$

Given:

$V=340m/sf=1700Hz\lambda =\frac{v}{f}\lambda =\frac{340}{1700}\lambda =0.2m=20cm$