The fourth overtone of a closed pipes is 900Hz, its fundamental frequency is
A cell of internal resistance of 2\(\Omega\) supplies current through a resistor, X if the efficiency of the cell is 75%, find the value of X.
In voltage measurement, the potentiometer is preferred to voltmeter because it
Which of the following is the best as shaving mirror?
A refrigerator uses 150W. If it is kept on for 336 hours non-stop, what is the energy consumed in KWh?
