Mechanical Properties of Solids — Physics STD 11 Science — Question

Plot a graph showing the variation of specific heat of water with temperature.

It is said that the assumptions of kinetic theory are good for gases having low densities. Suppose a container is so evacuated that only one molecule is left in it. Which of the assumptions of kinetic theory will not be valid for such a situation? Can we assign a temperature to this gas?

Can an object be in pure translation as well as in pure rotation?

The diameter of ball A is half the diameter of ball B. What will be the ratio of their terminal velocities inside the water?

From where does a satellite revolving around a planet get the required centripetal force?

Does sound travel faster on a wet hot day or a dry cold day? Why?

What is the ratio of r.m.s. speed of oxygen and hydrogen molecules at the same temperature?

What are the three modes of transmission of heat energy from one point to another point?

What is the effect:

1. Of highly soluble impurities on the surface tension of a liquid?
2. Of less soluble impurities on the surface tension of a liquid?
3. On the angle of contact when the temperature of a liquid is increased?

A particle is in linear simple harmonic motion between two points, A and B, 10cm apart. Take the direction from A to B as the positive direction and give the signs of velocity, acceleration and force on the particle when it is:

At 2cm away from B going towards A.