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qUESTIONS

A plane progressive wave is represented by the equation y=0.1sin(200pit−20πx) where y is displacement in m , t in second and x is distance from a fixed origin in meter . The frequency, wavelength and speed of the wave respectively are

A wave travels in a medium according to the equation of displacement given by y(x,t) = 0.03 sin π(2t -0.01x). Where y and x are in metres and t in seconds. The wavelength of the wave is

Two identical sinusoidal waves each of amplitude 5 mm with a phase difference of π/2 are travelling in the same direction in a string. The amplitude of the resultant wave (in mm) is

The amplitude of a wave represented by displacement equation y = 1/√a sin ωt ± 1/√b cos ωt will be

Two waves having equations x1=asin(ωt+ϕ1),x2=asin(ωt+ϕ2) If in the resultant wave the frequency and amplitude remain equal to those of superimposing waves. Then phase difference between them is

Equation of motion in the same direction is given by y1 = Asin(wt-kx), y2 = Asin(wt-kx-Θ). The amplitude of the medium particle will be

The two interfering waves have intensities in the ratio 9: 4. The ratio of intensities of maxima and minima in the interference pattern will be

A point source emits sound equally in all directions in a non- absorbing medium, Two points P and Q are at distance of 2m and 3 m respectively from the source. The ratio of the intensities of the waves at P and Q is

Two waves are represented by y1 = 4 sin 404πt and y2 = 3 sin 400лt. Then

A stationary point source of sound emits sound uniformly in all directions in a non-absorbing medium. Two points P and Q are at a distance of 4 m and 9 m respectively from the source. The ratio of amplitudes of the waves at P and Q is

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