Question

The wavelength of sound in air is $\lambda$. If this sound wave travels in a metal,its wavelength is ${\lambda }_m$, then

• A. ${\lambda }_m$ = $\lambda$
• B. ${\lambda }_m$ > $\lambda$
• C. ${\lambda }_m$ < $\lambda$
• D. cannot be computed

Answer 1

Answer: (B)

${\lambda }_m$ > $\lambda$

Speed of sound and wavelength are directly proportional to each other. Since frequency remains constant, ${\lambda }_m$ > $\lambda$
The correct option is (b)