Waec Physics 2010 Past Questions and Answers

Question 16:

• WAEC 2010

a machine is said to be a third class lever when the

A. Load is between the fulcrum and effort
B. Fulcrum is between the effort and the load
C. Effort is between the fulcrum and load
D. Fulcrum is directly below the load

Question 17:

• WAEC 2010

a thermometer records 680 mmHg at steam point and 440 mmHg at ice point. The temperature it records at 380 mmHg is

A. -25^oC
B. -20^oC
C. 20^oC
D. 25^oC

Question 18:

• WAEC 2010

The advantages of the thermoelectric thermometer include the following characteristics except that it

A. Can measure rapidly changing temperatures
B. Can measure high and low temperature
C. Can measure high and low temperature almost at a point
D. Is fairly sensitive

Question 19:

• WAEC 2010

In a thermos flask, heat loss by radiation is minimizes by the

A. Silvered surfaces
B. Vacuum within the doubled walls
C. Plastic stopper
D. Cork support

Question 20:

• WAEC 2010

The pressure P, volume V, and absolute temperature T of a given mass of an ideal gas change simultaneously. Which of the followng equations is correct about the gas?

A. PV = \(\frac{constant}{T}\)
B. \(\frac{P}{T} = Constant\)
C. \(\frac{P}{V} = \frac{constant}{T}\)
D. \(\frac{I}{T} = \frac{constant}{PV}\)