Physics Past Questions and Answers

A body of mass 6kg rests on an inclined plane. The normal reaction is R and the limiting frictional force is F as shown in the image above. if F = 30N, and g = 10ms<sup style='font-size: smaller;'>2</sup> then the angle of inclination \( \theta \) is

The effect of closing the key K in the circuit shown above would be to

The wave motion above has a frequency

The hatch door of a submarine has an area of 0.5m<sup style='font-size: smaller;'>2</sup>. The specific gravity of sea water is 1.03. Assume that g = 10ms<sup style='font-size: smaller;'>-1</sup>,and neglect the atmospheric pressure. The force exerted by the sea water on the hatch door at a depth of 200m is

A man stands on a spring scale placed in a lift. The lift descends at constant velocity. As a result, the scale reads a weight