A room is heated by means of a charcoal fire, An occupant...
A room is heated by means of a charcoal fire, An occupant of the room standing away from the fire is warmed mainly by
convection
radiation
conduction
reflection
Correct answer is B
No explanation has been provided for this answer.
A p-n junction diode is used as? ...
Which of the following statements is true of the properties of a moving coil galvanometer? ...
Which of the following instruments may be used to measure relative humidity? ...
The main reason why a.c. is transmitted at very high voltage and low current is that ...