Diffraction of wave can be observed clearly only when the
size of slit or obstacle is nearly ………. To the wavelength of the wave:
The waves which travel in straight line through space and
have strong signals are called:
If the mass of bob of a simple pendulum is doubled, its time
period:
The maximum displacement from mean position is called:
The value of acceleration is simple harmonic motion at mean
position is:
When a body moves to and fro about a point, its motion is
called:
