Question 398: Waves

Question

Which one of the following statements is true?

Accepted Answer

In a pipe closed at one end only odd harmonics of the fundamental are produced. If $\mathrm{f}$ is the fundamental frequency then the harmonics produced are $3 \mathrm{f}, 5 \mathrm{f}, 7 \mathrm{f}, \ldots \ldots$ The difference between the successive overtones is $2 \mathrm{f}$.
$\begin{aligned}
& 	herefore 250 \mathrm{~Hz}-150 \mathrm{~Hz}=2 \mathrm{f} \
& 	herefore 100 \mathrm{~Hz}=2 \mathrm{f} \
& 	herefore \quad \mathrm{f}=50 \mathrm{~Hz}
\end{aligned}$

Answer

The sound waves in air are longitudinal while the light waves in air are transverse.

Answer

Both light and sound waves in air are transverse.

Answer

Both light and sound waves in air are longitudinal.

Answer

The sound waves are transverse and light waves are longitudinal.

Waves

Which one of the following statements is true?

Choose the correct answer: