Physics

What was the first postulate stated by Bohr?

If force (F), mass (M), length (L) are taken as fundamental quantities, dimensions of time will be

What is the current through an ideal P – N junction diode shown in figure below?

The value of alternating emf (E) in the given circuit will be

A farsighted person cannot focus distinctly objects closer than 100 cm. The lens that will permit him to read from a distance of 50 cm, will have a focal length:

Figure shows four plates each of area A and separated from another by a distance d. What is the capacitance between P and Q?

A body possesses kinetic energy x, moving on a rough horizontal surface, is stopped in a distance y. The friction force exerted on the body is

A charged particle of mass m and charge q is released from rest in a uniform electric field E. The KE of particle after time t is:

The kinetic energy of a body varies directly as square of time elapsed. The force acting varies directly as

The velocity of liquid coming out of a small hole of a large vessel containing two different liquids shown in figure is