The mercury column in a simple mercury barometer is of height 5m above the mercury in a reservoir. If the tube is replaced with one whose radius is twice th...

The angle between the geographic and the magnetic meridians at a place on the earth’s surface is the

Which of the statements is/are true of two bodies involved in an inelastic collision? After collision. I. the kinetic energy increases II. The momentum decre...

A 12V battery supplies a current of 0.4A to a lamp. Calculate the resistance of the lamp.

491 K is equivalent to

The following are derived units EXCEPT

A body moves along a circular path with uniform angular speed of 0.6 rad s-1 and at a constant speed of 3.0 ms-1. Calculate the acceleration of the body towa...

An object is placed in front of a concave mirror whose radius of curvature is 12cm. If the magnification of the Image produced is 1.5, how far is the object ...

An atom radiates 1.5 × 10-19J when an electron jumps from one level to another. What is the wavelength of the emitted radiation? (Planck’s constant 6.6 × l0-...