Physics Past Questions and Answers

A wire of length 2.00 m and radius 1.0 mm is stretched by 25.0 mm on application of a force of 103 N. Calculate the Young's modulus for the wire.

State three ways of increasing the rate of cooling of a cup of hot tea.

(a) What is doping in a semi conductor?<br/>(b) Draw the symbol for OR gate.

The circuit above consists of an a. c. voltage input, a diode, a resistor and a voltmeter.<br/>(a) Identify the circuit.<br/>(b) Draw the waveform for the output voltage.

(a) Write the de Broglie equation.<br/>(b) Explain the significance of the equation.