Question 871:

• JAMB 1997

What happens when a gas expands at constant temperature?

A. Its pressure decreases
B. The total momentum of its molecules remains constant
C. Its pressure decreases and the total momentum of its moleculees remains constant
D. Its pressure decreses and the total kinetic energy of its molecule decreases

Question 872:

• JAMB 1997

Ripples on water and light waves are similar because both

A. Have the same frequency
B. Can be refracted and diffracted
C. Are longitudinal waves
D. Have the same velocity

Question 873:

• JAMB 1997

Under constant tension and constant mass per unit length, the note produced by a plucked string is 500Hz when the length of the string is 0.90m. At what length is the frequency 150Hz?

A. 3m
B. 4m
C. 5m
D. 6m

Question 874:

• JAMB 1997

The colours seen in the thin films of oil on the road and in soap bubbles are due to

A. Reflection
B. Interference
C. Diffraction
D. Polarization

Question 875:

• JAMB 1997

If the load at the end of a sonometer wire is immersed in a bucket of water, the original fundamental frequency of the wire could be restored by

A. Decrease the length of the wire
B. Increasing the length of the wire
C. Increasing the mass per unit length of the wire
D. Changing the temperature of the wire