What is the effect of humidity on sound waves when humidity increases ?
Speed of sound waves increases
Speed of sound waves decreases
Speed of sound waves remains same
Speed of sound waves becomes zero
With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
energy, momentum and mass
energy
energy and mass
energy and linear momentum
A stretched string resonates with tuning fork frequency 512 Hz when length of the string is 0.5 m. The length of the string required to vibrate resonantly with a tuning fork of frequency 256 Hz would be
0.25 m
0.5 m
1 cm
2 m
The equation of a sound wave is given as y = 0.005 sin (62.4x+ 316t ). The wavelength of this wave is
0.4 unit
0.3 unit
0.2 unit
0.1 unit
Two sound waves with wavelengths 5.0 m and 5.5 m respectively, each propagate in a gas with velocity 330 m/s. We expect the following number of beats per second.
Two strings A and B have lengths lA and lB and carry masses MA and MB at their lower ends, the upper ends being supported by rigid supports. If nA and nB are the frequencies of their vibrations and nA = 2nB, then
lA = 4lB, regardless of masses
lB = 4lA, regardless of masses
MA = 2MB , lA = 2lB
MB = 2MA, lB = 2lA
The wave described by
where x and y are in metre and t in second, is a wave travelling along the
A 5.5 length of string has a mass of 0. 035 kg. If the tension in the string is 77 N, the speed of a wave on the string is
110 ms-1
165 ms-1
77ms-1
102ms-1
Two waves of same frequency and intensity superimpose on each other in opposite phases. After the superposition, the intensity and frequency of waves will
increase
decrease
remain constant
become zero
A vehicle, with a horn of frequency n is moving with a velocity of 30 m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n + n1. Then (If the sound velocity in air is 300 m/s)
n1 = 10 n
n1 = 0
n1 = 0.1 n
n1 = -0.1 n