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
Equations of two progressive waves are given by y1 = a sin (ωt + ø2). If amplitude and time period of resultant wave are same as that of both the waves, then (ø1 - ø2) is:
A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating frequency of the scanner is 4.2 MHz. The speed of sound in a tissue is 1.7 km/s. The wavelength of sound in tissue is close to:
4 x 10-4 m
8 x 10-4 m
4 x 10-3 m
8 x 10-3 m
Equation of progressive wave is given by
Then which of the following is correct?
v = 5 cm
λ = 18 cm
a = 0.04 cm
ƒ = 50 Hz
A wave of amplitude a = 0.2m, velocity v= 360 m/s and wavelength 60 m is travelling along positive x axis, then the correct expression for the wave is:
For production of beats the two sources must have:
Different frequencies and same amplitude
Different frequencies
Different frequencies, same amplitude and same phase
Different frequencies and same phase
A car is moving towards a high cliff. The car driver sounds a horn of frequency ƒ. The reflected sound heard by the driver has a frequency 2ƒ. If v be the velocity of sound, then the velocity of the car, in the same velocity units, will be:
A wave in a string has an amplitude of 2cm. The wave travels in the +ve direction of x axis with a speed of 128 ms-1 and it is noted that 5 complete waves fit in 4 m length of the string. The equation describing the wave is:
y = (0.02)m sin (7.85 x + 1005t)
y = (0.02)m sin (15.7 x - 2010t)
y = (0.02)m sin (15.7 x + 2010t)
y = (0.02)m sin(7.85 x - 1005t)
A 5.5 m 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
77 ms-1
102 ms-1
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
