It is possible to distinguish between transverse and longitudinal waves form the property of __________________?
(A) refraction
(B) polarization
(C) interference
(D) diffraction
If stretching force T of wire increases, then its frequency __________________?
(A) decreases
(B) increases
(C) remains the same
(D) any of above
When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?
(A) decreases
(B) increases
(C) remains unchanged
(D) becomes zero
The waves that require a material medium for their propagation are called__________________?
(A) matter waves
(B) electromagnetic waves
(C) carrier waves
(D) mechanical waves
Which phenomena can be applied to estimate the velocity of star with respect to earth ___________________?
(A) Dopplers effect
(B) Interference of waves
(C) Beats phenomena
(D) All of these
The speed of stationary waves in a stretched string are independent of___________________?
(A) Number of loops
(B) Tension in the string
(C) Point where string is plucked
(D) both A and C
The speed of sound in hydrogen is _____________ time than that in oxygen?
(A) Two times
(B) Three times
(C) Four time
(D) Six time
Newton estimated the speed of sound _____________________?
(A) 281m/sec
(B) 333m/sec
(C) 340m/sec
(D) all of the above
Which one is the correct relation for fundamental frequency of open and closed pipe ?
(A) fopen = 2 fclosed
(B) fclosed = 2fopen
(C) fopen = fclosed
(D) fopen = 1 / f closed
When the source of sound moves away form a stationary listener then ______________ occurs?
(A) an apparent increase in frequency
(B) an apparent decrease in frequency
(C) an apparent decrease in wavelength
(D) no apparent change in frequency