Download App

Some Mechanical Properties of Matter — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsSome Mechanical Properties of Matter2 Marks
Question
If a compressed spring is dissolved in acid, what happened to the elastic potential energy of the spring?
✓

Answer

When a compressed spring dissolves in an acid, the acid molecules leave the sold lattice of the spring faster than the uncompressed spring. This in turn increases the kinetic energy of the solution. As a result, the temperature of the acid also increases. However, this temperature increase will be very small because the mechanical energy content in the spring is lesser than its chemical energy content.

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 "2 Marks Questions" from Some Mechanical Properties of Matter→Some Mechanical Properties of Matter — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

A vertical rod is hit at one end. What kind of wave propagates in the rod if:
  1. The hit is made vertically.
  2. The hit is made horizontally?
→
A brass plate having surface area $200\ cm^2$ on one side is electroplated with $0·10\ mm$ thick silver layers on both sides using a $15A$ current. Find the time taken to do the job. The specific gravity of silver is $10.5$ and its atomic weight is 1$07.9\ g/mol.$
→
Mention two specific characteristics of nuclear force.
→
A gas thermometer measures the temperature from the variation of pressure of a sample of gas. If the pressure measured at the melting point of lead is $2.20$ times the pressure measured at the triple point of water, find the melting point of lead.
→
A circular coil of radius 2.0cm has 500 turns and carries a current of 1.0A. Its axis makes an angle of 30° with the uniform magnetic field of magnitude 0.40 T that exists in the space. Find the torque acting on the coil.
→
Give explanation about polaroid and its passaxis, and give uses of the polaroid.
→
A point source is placed at a depth h below the surface of water (refractive index = μ).
  1. Show that light escapes through a circular area on the water surface with its centre directly above the point source.
  2. Find the angle subtended by a radius of the area on the source.
→
A proton and a deuteron are accelerated through the same accelerating potential. Which one of the two has,
  1. greater value of de$-$Broglie wavelength associated with it, and
  2. less momentum?
Give reasons to justify your answer.
→
A 44 m H inductor is connected to 220 V, 50 Hz ac supply. Determine the rms value of the current in the circuit.
→
Calculate the value of electric potential due to a system of charges.
→