Deal beat galvanometer works on the principle of

Potometer works on the principle of:

Tangent galvanometer works on the priniciple of ............. .

Prism works on the principle of :

Electric fan works on the principle of

Thermostat works on the principle of

A moving coil type of galvanometer is based upon the principle that

Ultramicrosecope works on the principle of :

(A) The rotation of Saturn's rings and of double stars has been detected using the phenomenon of beats. (B) Megaphone and ear trumpet work on the principle of interference of sound.

(A) The rotation of Saturn's rings and of double stars has been detected using the phenomenon of beats. (B) Megaphone and ear trumpet work on the principle of interference of sound.