Question

If in a medium wave's wavelength is decreased, what will happen to its frequency?

• A. Increase
• B. Decrease
• C. Frequency Doesn't depend on wavelength
• D. Data insufficient need density too

Answer 1

The correct option is A

Increase

In a Medium the velocity of a sound wave is fixed if the Medium's property are not changed

Also v = $\lambda$ f

Where v = wave velocity

$\lambda$ = wavelength

f = wave frequency

So if v is constant and wavelength is decreased you don't need physics to tell you what will happen to its frequency.

v = $\lambda \downarrow f\uparrow$

The frequency will have to increase to keep the velocity constant.

Simple maths