Laws of Motion — Physics STD 11 — Question

The maximum fractional error in the division of two quantities is ….

Which of the following process is reversible?

The apparent wavelength of the light from a star, moving away from the earth, is 0.01% more than its real wave length. The speed of the star with respect to the earth is ……

The speed of an object sliding in an inclined plane at the bottom is –

The net force acting on a body when it is at rest is –

A boy “A” of mass 50 kg climbs up a staircase in 10 s. Another boy “B” of mass 60 kg climbs up a Same staircase in 15s. The ratio of the power developed by the boys “A” and “B” is

If a1, a2, a3 …. an are the measured value of a physical quantity “a” and am is the true value then absolute error …..

Unit of impulse ….

The magnitude of angular momentum is given by –

A gale blows over a house. The force due to the gale on the roof is ………