Thermodynamics — Physics STD 11 Science — Question

A piece of lead is hammered. Does its internal energy increase? Does the heat enter the lead from outside?

Why do the fan blades continue to move for some time even after switching off the electricity?

Which is more elastic: water or air? Why?

The length of the string of a simple pendulum is measured with a metre scale to be 90.0cm. The radius of the bob plus the length of the hook is calculated to be 2.13cm using measurements with a slide callipers. What is the effective length of the pendulum? (The effective length is defined as the distance between the point of suspension and the centre of the bob.)

Deduce the dimensional formula for R, using ideal gas equation PV = nRT

What will be the ratio between the root mean square velocities and kinetic energies of gas at 270 K and 30K?

Calculate the volume of 1 mole of an ideal gas at STP.

In Regnault's apparatua for measuring specific heat capacity of a solid, there is an inlet and an outlet in the steam chamber. The inlet is near the top and the outlet is near the bottom. Why is it better than the opposite choice where the inlet is near the bottom and the outlet is near the top?

Consider the energy density in a solenoid at its centre and that near its ends. Which of the two is greater?