Physics 1998 JAMB Past Questions

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A vapour is said to be saturated when

A. more molecules return to the liquid than the amount that left it
B. a dynamic equilibrium exists between the molecules of the liquid and the vapour molecules at a given temperature
C. the vapour pressure is equal to the atmospheric pressure
D. all molecules are moving with the same speed in all directions at a given temperature

View Answer & Discuss (3) JAMB 1998

One valid assumption of the kinetic theory of gasses is the

A. the molecules of a gas are constantly in a state of motion and the number of collision remains constant
B. the number of molecule of gas increases with increasing pressure
C. as the temperature increases, the number of collision made by the gas molecule remains constant
D. the molecules of gas are all identical and are very small in size

View Answer & Discuss (11) JAMB 1998

The physical properties of sound waves can best be described by