Units and Measurements — Physics STD 11 Science — Question

Mark the correct statements:

1. Equations of special relativity are not applicable for small speeds.
2. Equations of special relativity are applicable for all speeds.
3. Nonrelativistic equations give exact result for small speeds.
4. Nonrelativistic equations never give exact result.

What is the height at which the satellite is to be parked for it to be a geostationary satellite?

What is the significance of the slope of x-t graph.

A retarding force is applied to stop a motor car. If the speed of the motor car is doubled, how much more distance will it cover before stopping under the same retarding force?

Write an expression for distance covered in n^th second for a uniformly accelerated motion.

Can the entire kinetic energy be dissipated in a completely inelastic collision?

What do you mean by r.m.s speed of molecules of gas? Is r.m.s. speed same as the average speed at given temperature?

Explain the meaning of reversible process.

In M.K.S. system, what is the unit of coefficient of viscosity?

State First law of thermodynamics.