Work, Energy and Power — Physics STD 10 — Question

A machine displaces a load of 125 kgf through a distance 0.3 m, when an effort of 12.5 kgf acts through a distance of 4.0 m then, the velocity ratio of the machine is:

If 'V' denotes electric potential, 'W' the energy spent in bringing a Q unit positive charge from infinity to a given point in an electric field then:

The point at which the energy is supplied to a machine by applying the effort is called the:

Which statement is incorrect?

Machine acts as a __________ .

One kilocalorie is equal to :

The refracted ray is ________ to the base of the prism in minimum deviation position.

S.I. unit of conductivity is _________ .

Uniform linear motion has _____________ .