Physics Test - ...

Represent 1 kWh in terms of joules (J).

The smallest unit that is used to express the size of an atom is

Which of the following options is not a unit of length?

What is the SI unit of pressure?

The density of the material of a cube is determined by measuring its mass and edge length. If the maximum errors in the measurement of the mass and edge length are 3% and 2%, respectively, then the maximum error in the measurement of density is

Ampere-hour is the unit of

A force F is applied horizontally to a block A of mass m₁ which is in contact with a block B of mass m₂ as shown in the figure. If the surfaces are frictionless, the force exerted by A on B is given by:

A force acts for 10 s on a body of mass 100 kg, after which the force ceases to act and the body describes 160 m in the next 8 s. What is the magnitude of the force? (Assume no frictional losses)

The pulleys and the strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, angle θ should be

Directions: The following question has four choices, out of which ONLY ONE is correct.
A particle moves in the xy-plane under the action of a force F, such that the value of its linear momentum p at any time t is p_x= 2 cos t, p_y = 2 sin t. The angle between F and p at any given time t will be