MCQ
Potential energy is defined ............
  • A
    Only in conservative fields
  • B
    As the negative of work done by conservative forces
  • C
    As the negative of workdone by external forces when $\Delta K=0$
  • All of these

Answer

Correct option: D.
All of these
d
(a)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

$ABCDEF$ is a regular hexagon and forces represented in magnitude and direction by  $AB, AC,AD, AE$ and $AF$ act at $A$. Their resultant is :
Two masses $M_1$ and $M_2$ are attached to the ends of a string which passes over a pulley attached to the top of a double inclined plane of angles of inclination $\alpha $ and $\beta $. If $M_2 > M_1$, the acceleration $a$ of the system is given by
Imagine $a$ situation in which the horizontal surface of block $M_0$ is smooth and its vertical surface is rough with $a$ coefficient of friction $\mu$ Consider a special situation in which both the faces of the block $M_0$ are smooth, as shown in adjoining figure. Mark out the correct statement $(s)$
A black body radiates energy at the rate of $E$ $W/m^2$ at a high temperature $TK$ . When the temperature is reduced to $\frac{T}{2}K$, the radiant energy will be
When fluids are heated from the bottom, convection currents are produced because
The vibrations of a string of length $60\, cm$ fixed at both the ends are represented by the equation $y = 2\,\sin \,\left( {\frac{{4\pi x}}{{15}}} \right)\,\cos \,\left( {96\pi t} \right)$ where $x$ and $y$ are in $cm$. The maximum number of loops that can be formed in it is
A coin is dropped in a lift. It takes time ${t_1}$ to reach the floor when lift is stationary. It takes time ${t_2}$ when lift is moving up with constant acceleration. Then
A vertical cylindrical container of base area $A$ and upper cross-section area $A_1$ making an angle $30^o $ with the horizontal is placed in an open rainy field as shown near another cylindrical container having same base area $A$. The ratio of rates of collection of water in the two containers will be
The point through which the total weight of an object appears to act for any orientation of the object is ______.
The maximum possible efficiency of a heat engine is ...........