The carbon-granules microphone works on the principle of ...
The carbon-granules microphone works on the principle of change in
inductance
resistance
capacitance
voltage
Correct answer is B
No explanation has been provided for this answer.
The image obtained on the screen of a pin-hole camera becomes less sharply defined when the ...
The most suitable type of mirror used for the construction of the search light is the? ...
The equation PxVyTz = constant...
Which of the following statements is true? The frequency of a vibrating string is ...
The sign of the change on a charged glass rod may be determined with ...