Waves — Physics STD 11 Science — Question

Does a solid also have two kinds of molar heat capacities C_P and C_v? If yes, do we have C_P > C_v? Is C_P - C_v = R?

A ladder is at rest with its upper end against a wall and the lower end on the ground. Is the ladder more likely to slip, when a man stands on it at the bottom or at the top? Give reason.

Light passes through a closed cylindrical tube containing a gas. If the gas is gradually pumped out, the speed of light inside the tube will:

1. Increase.
2. Decrease.
3. Remain constant.
4. First increase and then decrease.

Write the relationship between different temperature scales.

What is the shape of displacement-time graph for uniform linear motion?

What is the relation between path difference and phase difference?

A body of mass 2kg initially at rest moves under the action of an applied horizontal force of 7N on a table with coefficient of kinetic friction = 0.1. Compute the:
Work done by the applied force in 10s.

A black metal foil is warmed by radiation from a sphere at temperature T at a distance d. If the power received is P, find the power received when both the temperature and distance are doubled.

How will a mercury barometer's height change, if we introduce some water vapour into it.

Write the formula of maximum height. What is the velocity of projectile at the maximum height?