MCQ
If the tension on a wire is removed at once, then
  • A
    It will break
  • B
    Its temperature will reduce
  • C
    There will be no change in its temperature
  • lts temperature increases

Answer

Correct option: D.
lts temperature increases
(d) Due to tension, intermolecular distance between atoms is increased and therefore potential energy of the wire is increased and with the removal of force interatomic distance is reduced and so is the potential energy. This change in potential energy appears as heat in the wire and thereby increases the temperature.

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

Two identical batteries, each of e.m.f. 2 volt and internal resistance 1.0 ohm are available to produce heat in an external resistance $R=0.5 ohm$ by passing a current through it. The maximum Joulean power that can be developed across $R$ using these batteries is
A plano-convex lens is made of refractive index of $1.6.$ The radius of curvature of the curved surface is $60 \mathrm{~cm}$. The focal length of the lens is
A square loop of side $2a$ and carrying current I is kept in $xz$ plane with its centre at origin. A long wire carrying the same current I is placed parallel to $z-$axis and passing through point $(0, b , 0),( b >> a ) .$ The magnitude of torque on the loop about $z-$ax is will be
An insulator container contains 4 moles of an ideal diatomic gas at temperature $T$. Heat $Q$ is supplied to this gas, due to which 2 moles of the gas are dissociated into atoms but temperature of the gas remains constant. Then
If the following input signal is sent through a $P N$-junction diode, then the output signal across $R$ will beImage
A wave is represented by the equation $y=7 \sin \left(7 \pi t-0.04 x \pi+\frac{\pi}{3}\right)$ $x$ is in metres and $t$ is in seconds. The speed of the wave is
A magnet of magnetic moment $ 20 $ $C.G.S.$  units is freely suspended in a uniform magnetic field of intensity $0.3 $ $ C.G.S.$ units. The amount of work done in deflecting it by an angle of $30°$ in $ C.G.S.$  units is
An aeroplane flies $400 m$ north and $300 m$ south and then flies $1200 m$ upwards then net displacement is
A uniform magnetic field $B$ of $0.3\, T$ is along the positive $Z-$ direction . A rectangular loop $(abcd)$ of sides $10\, cm\times5\, cm$ carries a current $I$ of $12\, A$. Out of the following different orientations which one corresponds to stable equilibrium ?
A Carnot engine whose low temperature reservoir is at $7^{\circ} \mathrm{C}$ has an efficiency of $50 \%$. It is desired to increase the efficiency to $70 \%$. By how many degrees should the temperature of the high temperature reservoir be increased