Question
Assertion : A spring has potential energy, both when it is compressed or stretched.
Reason : In compressing or stretching, work is done on the spring against the restoring force.

Answer

(a) The work done on the spring against the restoring force is stored as potential energy in both conditions when it is compressed or stretched.

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

Assertion : Gravitational force between two particles is negligibly small compared to the electrical force.
Reason : The electrical force is experienced by charged particles only.
Assertion : Mass and energy are not conserved separately, but are conserved as a single entity called mass-energy.
Reason : Mass and energy conservation can be obtained by Einstein equation for energy.
Assertion : Reduction factor $(K)$ of a tangent galvanometer helps in reducing deflection to current.
Reason $\quad$ : Reduction factor increases with increase of current.
Assertion : A man sitting in a boat which is floating on a pond. If the man drinks some water from the pond, the level of the water in the pond decreases.
Reason : According to Archimede's principle the weight displaced by body is equal to the weight of the body.
Assertion $\quad:$ An aircraft flies along the meridian, the potential at the ends of its wings will be the same.
Reason : Whenever there is change in the magnetic flux e.m.f. induces.
Assertion : In isothermal process whole of the heat energy supplied to the body is converted into internal energy.
Reason : According to the first law of thermodynamics $\Delta Q=\Delta U+p \Delta V$
Assertion : A needle placed carefully on the surface of water may float, whereas a ball of the same material will always $\sin k$.
Reason : The buoyancy of an object depends both on the material and shape of the object.
Assertion : Mass and energy are not conserved separately, but are conserved as a single entity called mass-energy.
Reason : Mass and energy conservation can be obtained by Einstein equation for energy.
Assertion : When a solid iron ball is heated, percentage increase is its volume is largest.
Reason : Coefficient of superficial expansion is twice that of linear expansion where as coefficient of volume expansion is three time of linear expansion.
Assertion : Different colours travel with different speed in vacuum.
Reason : Wavelength of light depends on refractive index of medium.