Download App

Work, Energy, Power and Collision — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsWork, Energy, Power and Collision1 Mark
Question
Assertion : Graph between potential energy of a spring versus the extension or compression of the spring is a straight line.
Reason : Potential energy of a stretched or compressed spring, proportional to square of extension or compression.
✓

Answer

(e) Potential energy $U=\frac{1}{2} k x^2$ i.e. $U \propto x^2$This is a equation of parabola, so graph between $U$ and $x$ is a parabola, not straight line.

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

Explore more

More "Assertion & Reason" from Work, Energy, Power and Collision→Work, Energy, Power and Collision — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

Assertion : When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction.
Reason : The frictional force acts only when the bodies are in contact.
→
Assertion : The radiation from the sun's surface varies as the fourth power of its absolute temperature.
Reason : The sun is not a black body.
→
Assertion : For a floating body to be in stable equilibrium, its centre of buoyancy must be located above the centre of gravity.
Reason : The torque produced by the weight of the body and the upthrust will restore body back to its normal position, after the body is disturbed.
→
Assertion : Transverse waves travel through air in an organ pipe.
Reason : Air possesses only volume elasticity.
→
Assertion : For a perfectly diamagnetic substance permeability is always one.
Reason : The ability of a material of permit the passage of magnetic lines of force through it is called magnetic permeability.
→
Assertion : The crystalline solids have a sharp melting point.
Reason : All the bonds between the atoms or molecules of a crystalline solids are equally strong, that they get broken at the same temperature.
→
Assertion : Displacement of a body may be zero when distance travelled by it is not zero.
Reason : The displacement is the longest distance between initial and final position.
→
Assertion : A red object appears dark in the yellow light.
Reason $\quad:$ A red colour is scattered less.
→
Assertion : Sun is at the galactic centre $C$ of the milky way
Reason : All planets of solar system revolve around the sun.
→
Assertion : A safe turn by a cyclist should neither be fast nor sharp.
Reason : The bending angle from the vertical would decrease with increase in velocity.
→