Question

The Mosquito is a device invented in England by Howard Stapleton for use as a teenager repellant for shop owners who have had problems with gangs of kids loitering in their shops, making trouble. The device emits sound waves with a frequency of 17.4 kHz, which kids can hear but adults cannot. The high-pitch sound is annoying, and the loiterers usually decide to go elsewhere.

(a) What is the wavelength of 17.4 kHz sound?
(b) What is the period?

Answer 1

This question is based on the following concepts:

1. wavelength of sound waves

2. Time period of sound waves

The detailed solution is described below.

Saluti e Ler us go to tha basies At eauncs or 1.91 C 1.1 , LI * 1000 Hz