PART - 1 CH - 1 Units and Measurements — Physics STD 11 Science — Question

When we place a gas cylinder on a van and the van moves, does the kinetic energy of the molecules increase? Does the temperature increase?

At the same temperature and pressure, the densities of two diatomic gases are d, and d. What is the ratio of the speeds of sound in these gases?

Why are springs made of steel and not of copper?

What type of change occurs when a solid melts?

Three containers have different area on the top surface and same base area. If equal volume of a liquid is put in them which will have more pressure at its base?

Can an object in linear motion be in equilibrium? Why?

Why is it not necessary for a body following another body, to stop to avoid collision?

1kg of ice at 0°C is mixed with 1kg of steam at 100°C. What will be the composition of the system when thermal equilibrium is reached? Latent heat of fusion of ice = 3.36 × 10³ J kg^-1 and latent heat of vaporization of water = 2.26 × 10⁶ J kg^-1.

Which one among a solid, liquid and gas of the same mass and at the same temperature has the greatest internal energy and which one has the least?