The amplitude of a progressive wave at n distance from a point source is A. then at 2n distance what is the amplitude?

Ratio of the amplitudes of two waves emitted from a pair of coherent sources is 2:1. If the two waves superpose, what will be the ratio of maximum and minimum intensities? What would have been the intensity at different points on screen if the sources were not coherent?

The ratio of amplitudes of two waves emitted from two coherent sources is 2:1 . If these two waves get superposed the ratio of maximum and minumum intensity will be

The ratio of kinetic energy and potential energy of a particle executing SHM at a distance of 2 cm from its equilibrium position is 3 : 2. What is the amplitude of vibration of the particle?

Two point A and B are situated at distance 1 m and 2m form the source of an electrostatic field. The field at a distance x from the source is E = (5)/(x^2) . What is the potential difference between A and B?

The process in which the amplitude of the carrier wave is made proportional to the instantaneous amplitude of the signal wave is called

The equation of a progressive wave is y = 15 sin pi (70t - 0.08x) . where y and x are in c.m. at t is in sec. Find the amplitude.frequency, wavelength and speed of the wave.

A particle executes simple harmonic motion along principle axis of a convex lens of focal length f with amplitude ‘a’. The centre point of the motion is at a distance ‘b’ from the lens. Find the amplitude of oscillation of the image.

The electric potential at a certain distance from a point charge is 600V and the electric field is 200 N//C . The distance of the point charge (in metres) is: