The speed of sound in oxygen is 635 m/s. Find out the speed of sound in a mixture of hydrogen and oxygen in which the ratio of hydrogen and oxygen volumes is 4:1.


Correct option is

1270 m/s


Suppose, in the mixture of hydrogen and oxygen the volumes of hydrogen and oxygen are V1 and V2 respectively. If their densities are d1 and d2respectively, then the masses of hydrogen and oxygen in the mixture will be V1d1 and V2d2 respectively. If the density of the mixture is d, then  



Let v be the speed of sound in the mixture, and v2 in oxygen. Then by Laplace’s formula, we have





Due to Doppler effect, the shift in the wavelength observed is 0.1 Å, for a star producing a wavelength 6000 Å. The velocity of recession of the star will be  


A particle, with restoring force proportional to displacement and damping force proportional to velocity is subjected to a force F sin ωt. If the amplitude of the particle is maximum at ω = ω1 and its energy is maximum at ω = ω2, then (ω0 is the angular frequency of natural oscillations of the particle)


A vehicle with a horn of frequency n is moving with a velocity of 30 ms–1in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency (n + n1). If the sound velocity in air is 300 ms–1 


Two springs of constants k1 and k2 have equal highest velocities while executing S.H.M. If their masses are equal, the ratio of their amplitudes will be


The velocity of sound is the greatest is


The speed of a wave in a medium is 960 m/s. If 3600 waves are passing through a point in the medium in  minute, then calculate the wavelength.


What is the frequency of radio waves transmitted by a station, if the wavelength of three waves is 300 meter?


At a pressure of 105N/m2 the volume strain of water is  Calculate the speed of sound in water. (Density of water = kg/m3).


At normal temperature and pressure the speed of sound in air is 332 m/s. What will be the speed of sound in hydrogen (i) at normal temperature and pressure, (ii) at 546oC temperature and 3 atmospheric pressure? (Air is 16 times heavier than hydrogen).


Find out the ratio of the velocity of sound in helium and in nitrogen gases at 300 K temperature. Molecular weights of helium and nitrogen are 4 and 28 respectively.