test_publish_chem

Important Questions on Wave Motion on a String

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

To propagate both longitudinal and transverse waves, a material must have

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

In Raman scattering, Stokes and Antistokes lines respectively represents lines with ______ and ______ wavelength.

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

Matter waves are

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

When a sound wave is reflected from the boundary of a denser medium, the compression of the incident wave is returned as:

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

In a resonance tube experiment when the tube is filled with water up to a height of $17.0 \mathrm{cm}\text{,}$ from bottom, it resonates with a given tuning fork. When the water level is raised the next resonance with the same tuning fork occurs at a height of $24.5 \mathrm{cm}\text{.}$ If the velocity of sound in air is $330 \mathrm{m} {\mathrm{s}}^{-1}\text{,}$ the tuning fork frequency is :

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

Which of the following is not a transverse wave?

MEDIUM

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

If the uncertainty in the position of an electron is ${10}^{-10} \mathrm{m},$ then the value of uncertainty in its momentum will be _____ $\mathrm{kg} {\mathrm{ms}}^{-1}. \left(h=6.62\times {10}^{-34}{ \mathrm{J}}^{-\mathrm{s}}\right)$

MEDIUM

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

The pitch of a sound wave depends upon which one of its following characteristics?

MEDIUM

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

An object was found to make oscillations governed by the equation $y={\cos }^2\left(\omega t+\frac{\pi }{4}\right)-0.5$. The amplitude and angular frequency of these oscillations, respectively, are

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

A pendulum vibrates with a time period of $1$ second. The sound produced in it is in the range of

MEDIUM

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

A sonometer wire 1 metre along weighing $2\mathrm{g}$ is in resonance with a tuning fork of frequency $300 \mathrm{Hz}$ Find tension in the sonometer wire.

MEDIUM

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

Assume that the displacement $\left(s\right)$ of air is proportional to the pressure difference $\left(\Delta p\right)$ created by a sound wave. Displacement $\left(s\right)$ further depends on the speed of sound $\left(v\right)$, density of air$\left(\rho \right)$ and the frequency $\left(f\right)$. If $\Delta p=10 \mathrm{Pa}\mathit{,}\mathit{ }n=300 \mathrm{m} {\mathrm{s}}^{-1}\mathit{,}\mathit{ }p=1 \mathrm{kg} {\mathrm{m}}^{-3}$ and  $f=1000 \mathrm{Hz}$, then $s$ will be of the order of (take the multiplicative constant to be $1$)

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

Which waves are used in sonography?

MEDIUM

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

Match the following:

	Column$-\mathrm{I}$		Column$-\mathrm{II}$
(a)	Transverse wave through a steel rod	(i)	$\sqrt{B+\left(\frac{4}{3}\right)\frac{\eta }{\rho }}$
(b)	Longitudinal waves in earth's crust	(ii)	$\sqrt{\frac{\eta }{\rho }}$
(c)	Longitudinal waves through a steel rod	(iii)	$\sqrt{\frac{2\pi T}{g\lambda }}$
(d)	Ripples	(iv)	$\sqrt{\frac{\lambda }{\rho }}$

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

Pitch of the sound depends on

MEDIUM

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

A transverse wave travels on a taut steel wire with a velocity of $v$ when tension in it is $2.06\times {10}^4\mathrm{}\mathrm{N}.$ When the tension is changed to $\mathrm{T},$ the velocity changed to $\frac{v}{2}.$ The value of $\mathrm{T}$ is close to:

MEDIUM

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

Given below in the left column are different modes of communication using the kinds of waves given in the right column.

(1) Optical Fibre Communication	(P) Ultrasound
(2) Radar	(Q) Infrared Light
(3) Sonar	(R) Microwaves
(4) Mobile Phones	(S) Radio Waves

From the options given below, find the most appropriate match between entries in the left and the right column.

EASY

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

A bomb blasts on moon. Its sound will be heard on earth after

MEDIUM

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

The driver of bus approaching a big wall notices that the frequency of his bus's horn changes from $420 \mathrm{Hz}$ to $490 \mathrm{Hz}$ when he hears it after it gets reflected from the wall. Find the speed of the bus if speed of the sound is $330 {\mathrm{ms}}^{–1}$:

HARD

Physics>Oscillations and Waves>Wave Motion on a String>Wave Motion

A horizontal stretched string, fixed at two ends, is vibrating in its fifth harmonic according to the equation, $y\left(x,t\right)=\left(0.01\mathrm{m}\right)sin\left[\left(62.8 m^{-1}\right)x\right]cos\left[\left(628 s^{-1}\right)t\right]$. Assuming $\pi =\text{3.14}$, the correct statement(s) is (are):