An observer standing near the seashore observes 54 waves per minute. If the wavelength of the water wave is 10m then the velocity of a water wave is :
(1) 540 ms-1
(2) 5.4 ms-1
(3) 0.184 ms-1
(4) 9 ms-1
The equation of a wave is , where x and y are expressed in cm and t in sec. The wave velocity is :
1. 100 cm/sec
2. 200 cm/sec
3. 300 cm/sec
4. 400 cm/sec
Equation of a progressive wave is given by
The distance is expressed in cm and time in second. What will be the minimum distance between two particles having the phase difference of π/2 :
1. 4 cm
2. 8 cm
3. 25 cm
4. 12.5 cm
Two waves are given by and . The phase difference between the two waves is :
(1)
(2) π
(3)
(4)
If the amplitude of waves at distance r from a point source is A, the amplitude at a distance 2r will be :
(1) 2A
(2) A
(3) A/2
(4) A/4
A wave is reflected from a rigid support. The change in phase on reflection will be :
(1) π/4
(2) π/2
(3) π
(4) 2π
A plane wave is represented by
Where x and y are distances measured along in x and y direction in meters and t is time in seconds. This wave has
(1) A wavelength of 0.25 m and travels in + ve x-direction
(2) A wavelength of 0.25 m and travels in + ve y-direction
(3) A wavelength of 0.5 m and travels in – ve y-direction
(4) A wavelength of 0.5 m and travels in – ve x-direction
The equation of a wave traveling in a string can be written as . Its wavelength is :
(1) 100 cm
(2) 2 cm
(3) 5 cm
(4) None of the above
A transverse wave is described by the equation . The maximum particle velocity is four times the wave velocity if :
(1)
(2)
(3)
(4)
A transverse wave with an amplitude of \(0.5\) m, a wavelength of \(1\) m, and a frequency of \(2\) Hz is propagating along a string in the negative \(x\)-direction. The expression for this wave is:
1. \(y(x,t)=0.5~ \text{sin}(2 \pi x-4\pi t)\)
2. \(y(x,t)=0.5~ \text{cos}(2 \pi x+4\pi t)\)
3. \(y(x,t)=0.5~ \text{sin}( \pi x-2\pi t)\)
4. \(y(x,t)=0.5~ \text{cos}(2 \pi x+2\pi t)\)