Its amplitude
Its frequency
The wave velocity
Its harmonic content
The quality of sound depends upon its
The quality of sound produced by an instrument depends on the
The quality or tone of a musical sound produced by a stringed instrument depends on
The radio-active element used in heart pacemakers is
The radioactive Strontium-90 causes:
The rate at which energy is transferred is called
The rate of change of linear momentum of a body falling freely under gravity is equal to its _ ?
The rate of flow of electric charge is measured in
The reason for a swimming pool to appear less deep than the actual depth is
The redness in atmosphere at Sunrise & Sunset is due to: