Physics Past Questions and Answers

Which of the following may be used to determine relative humidity in a physics laboratory?
I. Manometer
II. Wet-and-dry bulb hygrometer
III. Hair hygrometer
IV. A hydrometer

An electric heater with a p.d of \(240 \mathrm{~V}\) connected across its terminals has a total resistance of \(960 \mathrm{~g}\) find the power rating of the heater

The speed of light in vacuum is \(3.0 \times\) \(10 \mathrm{~ms}\) if the refractive index of a transparent liquid is \(4 / 3\) then the speed of light in the liquid is

If the force on a charge of \(0.2\) coulomb In an electric field is \(4 \mathrm{~N}\), then the electric field Intensity of the field is

If a car starts from rest arid moves with a uniform acceleration of \(10 \mathrm{~ms}\) for ten seconds, the distance it covers In the last one second of the motion is ____________