If the air inside a rigid box is heated, the i, average speed of the molecules increases ii. pressure of the air increases iii. average separation of the molecule increases. Which of the statements above are correct?

Which of the following sets of quantities is fundamental?

which of the following statements about Archimedes' principle is correct? The upthrust on a body is a measure of the

Which of the following is/are in random motion? i. Pollen grains in water ii. The molecules of hydrogen gas ii. Fine chalk particles floating in air

A car travelling with a uniform velocity of 30ms^-1 along a horizontal road overcomes a constant frictional force of 600N. Calculate the power of the engine of the car