Embibe Experts Solutions for Chapter: Sound Waves, Exercise 1: Exercise-1

Dependence of disturbances due to two waves on time is shown in the figure. The ratio of their intensities $\frac{I_1}{I_2}$ will be:-

The maximum length of a closed pipe that would produce a just audible sound is $\left(v_{\mathrm{sound}}=336 \mathrm{m} {\mathrm{s}}^{-1}\right)$:-

A closed organ pipe of radius $r_1$and an open organ pipe of radius $r_2$ and having same length ' $L$ ' resonate when excited with a given tuning fork. Closed organ pipe resonates in its fundamental mode where as open organ pipe resonates in its first overtone, then:-

Plane sound waves of wavelength $0.12 \mathrm{m}$ are incident on two narrow slits in a box with non-reflecting walls, as shown. At a distance of $5.0 \mathrm{m}$ from the center of the slits, a first-order maximum occurs at point P which is $3.0 \mathrm{m}$ from the central maximum. The distance between the slits is most nearly

Frequency of tuning fork $A$ is $256 \mathrm{Hz}$. It produces $4 \mathrm{beats} {\sec }^{-1}$ with tuning fork $B$. When wax is applied at tuning fork$B$ then $6 \mathrm{beats} {\sec }^{-1}$ are heard. Frequency of $B$ is:-

Two open pipes of length $25 \mathrm{cm}$ and $25.5 \mathrm{cm}$ produces $0.1 \mathrm{beats} {\sec }^{-1}$. The velocity of sound will be:-

$16$ tuning forks are arranged in increasing order of frequency. Any two consecutive tuning rorks sounded together produce 8 beats per second. If the frequency of last tuning fork is twice that of first, the frequency of first tuning fork is:-

A person observes a change of $2.5\%$ in frequency of sound of horn of a car. If the car is approaching forward the person & sound velocity is $320 \mathrm{m} {\mathrm{s}}^{-1}$, then velocity of car in $\mathrm{m} {\mathrm{s}}^{-1}$  will be approximately:-