WAEC Physics Past Questions & Answers - Page 135

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

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

Which of the following sets of quantities is fundamental?

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?

There is always an uncertainty involved in any attempt to measure the position and momentum of an electron simultaneously. This statement is known as the