We can distinguish between the notes of a piano and flute
due to ………… of sound.
The critical angle for a beam of light passing from water
into air is 48.8 degrees. This mean that all light rays with an angle of
incidence greater than this angle will be:
Electron gun has an electrode called for controlling the
flow of electrons in the beam:
When resistances are connected in parallel, the current
passing through them is:
