Question
Is heat a conserved quantity?

Answer

Heat is not conserved quantity as heat only exists when there is some energy transferred.

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 spherical bobs, one metallic and the other of glass, of the same size are allowed to fall freely from the same height above the ground. Which of the two would reach earlier and why?
Calculate the time required to heat $20\ kg$ of water from $10^\circ C$ to $35^\circ C$ using an immersion heater rated $1000W$. Assume that $80\%$ of the power input is used to heat the water. Specific heat capacity of water $= 42000J \ kg^{-1} K^{-1}$.
Express the power of a $100$ watt bulb in $\text{CGS}$ unit.
A biconvex lens made of a transparent material of refractive index 1.5 is immersed in water of refractive index 1.33. Will the lens behave as a converging or a diverging lens? Give reason.
If the sum of all the forces acting on a body is zero, is it necessarily in equilibrium? If the sum of all the forces on a particle is zero, is it necessarily in equilibrium?
Consider a tightly wound 100 turn coil of radius $10 cm$, carrying a current of $1 A$. What is the magnitude of the magnetic field at the centre of the coil?
What is the focal length of a plane mirror?
Write the mathematical form of Ampere-Maxwell circuital law.
Define resistivity. Write its unit.
Consider a small surface area of $1\ mm^2$ at the top of a mercury drop of radius $4.0\ mm$. Find the force exerted on this area:
  1. By the air above it.
  2. By the mercury below it and.
  3. By the mercury surface in contact with it. Atmospheric pressure $= 1.0 \times 10^5Pa$ and surface tension of mercury $= 0.465N/m$. Neglect the effect of gravity. Assume all numbers to be exact.