The waves in which particles of the medium vibrate perpendicular to the direction of waves are:
Diffraction of wave can be observed clearly only when the size of slit or obstacle is nearly ………. To the wavelength of the wave:
In simple harmonic motion, the acceleration of the body is…………. Proportional to the displacement.
The value of acceleration is simple harmonic motion at mean position is:
The oscillations of a system in the presence of which force are called damp oscillations:
the motion in which the friction reduces the mechanical energy of the system as time passes and the amplitude of motion reduces is called:
The displacement produced in the spring is directly proportional to force is called: