Physics Past Questions and Answers

If the force of a charge of 0.2 coulomb in an electric field is 4N, then the electric field intensity of the field is

The specific latent heat of vaporization of a substance is always

Longitudinal waves do not exhibit

Which of the following may be used to determine the relative humidity in a physics laboratory
I. Manometer
II. Wet-and-Dry Bulb Hygrometer
III. Hair Hygrometer
IV. A Hydrometer

PQ is a thin rod on a horizontal table, RS is a plane mirror inclined at \( 45^{\circ}C\) to the horizontal as shown above. The image of PQ as seen in the mirror by the eye T is