Waves Test - 55...

The irreducible phase difference in any wave of 5000 A from a source of light is

Two waves having intensity ratio 9 : 1 produce interference. The ratio of maximum to minimum intensity is:

A stretched sting of length L,fixed at both ends can  sustain stationary waves of wavelength $$\lambda $$ Choose which of the following value of wavelength is not possible?

The ratio longest wavelength and the shortest wavelength observed in the five spectral series of emission spectrum of hydrogen is

Three waves of amplitude $$10\mu m,4\mu m$$ and $$7\mu m$$ arrival at a point with successive phase difference of $$\pi /2$$. The amplitude of the resultant wave is 

Equations $$Y_1=a$$ sin $$\omega t$$ and $$Y_2=a/2$$ sin $$\omega t + a/2$$ cos wt represent S.H.M. The ratio of the amplitude of first to that of second S.H.M. is

Two particles execute $$SHM$$ of same amplitude of $$20cm$$ with same period along the same line about the same equilibrium position. The maximum distance between the two is $$20cm$$. Their phase difference in radians is :-

Two waves are represented as $$y_1 = 2a sin (\omega t + \pi/6)$$ and $$y_2 = -2a cos \Big \lgroup \omega t - \frac{\pi}{6} \Big \rgroup$$. The phase difference between the two waves is

The time lag between two particles vibrating in a progressive wave separated by a distance $$20$$ m is $$0.02 s$$ . The wave  velocity if the frequency of the wave is $$500 Hz$$ , is  

A particle moves with a simple harmonic motion in a straight line. In the first second starting from rest, it travels a distance $$a$$ and in the next second, it travels a distance $$b$$ in the same direction. The amplitude of the motion is: