Jamb Physics 2008 Past Questions and Answers

Question 16:

• JAMB 2008

A sealed flask contains 600cm³ of air at 27°C and is heated to 35°C at constant pressure. The new volume is?

A. 508 cm³
B. 516 cm³
C. 608 cm³
D. 616 cm³

Question 17:

• JAMB 2008

A block of aluminum is heated electrically by a 25 W heater. if the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminum is?

A. 850 JK^-1
B. 750 JK^-1
C. 650 JK^-1
D. 500 JK^-1

Question 18:

• JAMB 2008

If the partial pressure of water vapour at 27°C is 18 mm Hg and the saturated vapour pressure of the atmosphere at the same temperature is 24 mm Hg, the relative humidity at this temperature is?

A. 25%
B. 33%
C. 75%
D. 82%

Question 19:

• JAMB 2008

In a good thermos flask, the main cause of heat loss is?

A. Conduction through the cork
B. The plastic base of the thermos flask
C. The silvered walls and shiny metals
D. The outer cover or jacker

Question 20:

• JAMB 2008

Given the progressive wave equation y = 5 sin (2000 πt - 0.4x), calculate wave length

A. 12.4 m
B. 15.7 m
C. 17.5 m
D. 18.6 m