If two charged plates are maintained at a potential difference of 3 kv, the work done in taking a charge of 600µc across the field is

The instrument that measures both ac and dc is called

A radioactive substance has a half life of 20 days. What fraction of the original radioactive nuclei will remain after 80 days?

In the diagram above, the pressure of the gas is

The frequency of the wave in the diagram above is

A mirror of weight 75N is hung by a cord from a hook on the wall. If the cord makes an angle of 30o with horizontal, the tension in the cord is

An engine of a car of power 80 kW moves on a rough road with a velocity of 32 ms-1. The forces required to bring it to rest is

A progressive wave equation is represented by y = a sin (150 πt - πt/4). if the phase difference of a progressive wave is 45o, the value of x in the equation is

A conductor has a diameter of 1.00mm and length of 2.00m. If the resistance of the material is 0.1Ω, the resistivity is