Frequency
Intensity
Number of overtones
None of these
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:
The reflector of a search light is a :
The refractive index of the material of a glass prism depends upon
