Physics Questions

In nuclear reactor, cadmium rods are used as which of the following?

An object is placed on the principal axis of a cortex lens of focal length 10 cm. If the distance of the object from the lens is 30 cm, what is the distance of the image formed?

Which of the following has low resistivity?

A sound of single frequency is called a

A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4seconds.

Optical fibre works on which of the following principle of light?

A body of mass 2 kg is thrown upward with initial velocity of 20 m/s. After 2 seconds, its kinetic energy will be : (g = 10 m/sq.s)

The SI unit of acceleration is _______________.