Calculate the resistance of the filament of a lamp rates ...
Calculate the resistance of the filament of a lamp rates 240 V, 40 W
240Ω
360Ω
720Ω
1440Ω
2880Ω
Correct answer is D
R = V2/P = 2402/40 = 1440Ω
blowing air over a liquid aids evaporation by ...
In which of the following is surface tension important? ...
What is the average velocity of the sprinter whose velocity time graph is as shown above ...
Which of the following physical quantities are derived? i. Area ii. Thrust iii. Pressure iv. M...
The action of blotting paper on ink is due to ...
A lead bullet of mass 0.05 kg is fired with a speed of 200 m/s into a lead block of mass 0.95 k...
A small object of mass 50 g is released from a point A. Determine the velocity of the object wh...