The sound waves in air are longitudinal while the light waves are transverse
C
Both light and sound waves in air are longitudinal
D
Both light and sound waves can travel in vacuum
AIPMT 2006, Easy
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B
The sound waves in air are longitudinal while the light waves are transverse
b
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A source is moving towards an observer with a speed of $20 m/s$ and having frequency of $240 Hz.$ The observer is now moving towards the source with a speed of $20 m/s$. Apparent frequency heard by observer, if velocity of sound is $340 m/s$, is ... $Hz$
The frequency of echo will be $.......Hz$ if the train blowing a whistle of frequency $320\,Hz$ is moving with a velocity of $36\,km / h$ towards a hill from which an echo is heard by the train driver. Velocity of sound in air is $330\,m / s$.
Two waves of intensity ratio $1: 9$ cross each other at a point. The resultant intensities at the point, when $I_1(a)$ Waves are incoherent is $I_1(b)$ Waves are coherent is $I_2$ and differ in phase by $60^{\circ}$. If $\frac{I_1}{I_2}=\frac{10}{x}$ than $x$ =. . . . . . . . . . .
A progressive wave travelling in positive by $x-$ direction given by $y = a\, sin (kx -\omega t)$ meets fixed end at $x = 0$. The reflected wave may be given by
The displacement y of a particle in a medium can be expressed as: $y = {10^{ - 6}}\sin (100t + 20x + \pi /4)m,$ where $t$ is in second and $x$ in meter. The speed of wave is ... $m/s$
A glass tube $1.5 m$ long and open at both ends, is immersed vertically in a water tank completely. A tuning fork of $660 Hz$ is vibrated and kept at the upper end of the tube and the tube is gradually raised out of water. The total number of resonances heard before the tube comes out of water, taking velocity of sound air $330 m/sec$ is
Equation of the progressive wave is given by : $y = a\sin \pi (40t - x)$ where $a$ and $x$ are in metre and $t$ in second. The velocity of the wave is ..... $m/s$