LMS

At points in a sound wave where the gas is maximally compressed, the pressure 

In simple harmonic motion: 

With the propagation of a longitudinal wave through a material medium, the quantities transferred in the direction of propagation are  

In simple harmonic motion, the magnitude of the acceleration is greatest when:

How does the speed v of sound in air depend on the atmospheric pressure P?

At what temperature the speed of sound in air will be 1.5 times its value at 27 ^o C in air?

When sound waves enter from air into water, then

The velocity of sound is vs in air. If density of air is increased twice then the new velocity of sound will be 

An ultrasonic scanner is used in a hospital to detect tumour in tissue. The working frequency of the scanner is 4.2 mega Hz. The velocity of sound in the tissue is 2.1 km/s. The wavelength of sound in the tissue is nearest to

The percentage error in Newton’s formula for the speed of sound in air is

A string of length 100 cm is held fixed at both ends and vibrates in a standing wave pattern. The wavelengths of the constituent traveling waves CANNOT be:

The speed of a sinusoidal wave on a string depends on:

In sound waves during the compressions

In simple harmonic motion, the displacement is maximum when the:  

A particular wavelength received from a galaxy is measured on earth and is found to be 5% more then that its’ wave length. Hence galaxy is

The sum of two sinusoidal traveling waves is a sinusoidal traveling wave only if:

A standing wave:

A particle oscillating in simple harmonic motion is

In the diagram below, the interval PQ represents: 

The speed of sound in vacuum at 10oC is

Which one of the following graphs shows constructive interference?

With rise in temperature, the speed of sound in a gas

An object is undergoing simple harmonic motion. In a complete cycle it:

Which of the following has maximum value of 

The displacement of particle in S.H.M. in one-time period, if its amplitude of its motion is “A” will be

Which of the following is mechanical wave?

To produce beats it is necessary to use two waves: 

The product of angular frequency (w) and time period T will be

On decreasing the temperature, the frequency of an organ pipe becomes

A tuning fork produces sound waves of wavelength λ in air. This sound is used to cause resonance in an air column, closed at one end and open at the other. The length of this column CANNOT be:

A sitar wire vibrates with frequency of 330 vibrations per second. If its length is increased three times and tension is increased four times, then the frequency of the wire will be

The length of a string is 1m, tension in it is 40N and mass of the string is 0.1 kg. Then the velocity of transverse waves produced in the string will be:

A tube closed at one end and containing air produce fundamental note of frequency of 256 Hz. If the tube is open at both ends, the fundamental frequency will be:

Which of the following laws of strings is not correct? Where “n” is frequency of string.

When both source and listener move in the same direction with a velocity equal to half the velocity of sound, the change in frequency of the sound as detected by the listener is:

The wavelength of the produced by a source is 0.8m. If the source moves towards the stationary listener at 32 m/s, what will be apparent wavelength of the sound? The velocity of sound is 320 m/s.

A plane produces a sonic boom only when

The velocity of sound in air is 330 m/s. The fundamental frequency of an organ pipe open at both ends and length 0.3 m will be.

The speed of a sound wave is determined by:

If a stretched-string is 4m and it has 4 loops of stationary waves, then wave length is

If a string vibrates in “n” loops, the wavelength of stationary wave will be:

In resonance tube, which of the followings is formed at open end 

A tight wire is clamped at two points 2 m apart. It is plucked near one end, what are the three longest wavelengths produced on the vibrating wire:

The frequency of the fundamental mode of transverse vibration of a stretched wire 1000 mm long is 250 Hz. When the wire is shortened to 500 mm at the same tension, what is the fundamental frequency?

If the speed of sound on a cold day is vc and its speed on hot day is va then

A stretched string resonates with fundamental frequency of 50 Hz. The wavelength for its 3rd overtone is if speed of transverse wave in the string is 100 m/s

Distance and displacement traveled by a vibrating body in a time equal to ; where T is the period of the vibration

In simple harmonic motion, the restoring force must be proportional to the

The ratio of 2nd overtone to 3rd overtone in stationary wave produced in an air column open at both ends is

Frequency f and angular frequency ω are related by