Jamb Physics 1986 Past Questions and Answers

Question 16:

• JAMB 1986

Mercury is suitable as a barometric fluid because it

A. Expands uniformly
B. Is opaque
C. Is several times denser than water
D. Is a good conductor of heat

Question 17:

• JAMB 1986

Which of the following properties makes metals ideal for cooking utensils?

A. High coefficient of expansion
B. Good conduction of heat
C. Low specific heat capacity
D. Poor radiation of heat

Question 18:

• JAMB 1986

A gas occupies a volume of 300cm³at a temperature of 27^oC. What is its volume at 54^oC, when the pressure is constant?

A. 150cm³
B. 273cm³
C. 327cm³
D. 600cm³

Question 19:

• JAMB 1986

When two objects P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The ratio of the specific heat capacity of P to Q is

A. 1 : 4
B. 4 : 1
C. 1 : 1
D. 2 : 1

Question 20:

• JAMB 1986

Which of the following is true of sounds?

A. Sound travels faster in air at 20^oC than at 30^oC
B. The frequency of a given sound wave changes when it crosses the boundary seperating two media
C. The wavelength of a given sound wave in air decreases as the temperature increases
D. Sound waves cannot be reflected