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Physics Past Questions and Answers

Waec Physics Questions

Question 1346:

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

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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

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Question 1347:

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

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

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Question 1348:

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

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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

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Question 1349:

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

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

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Question 1350:

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?

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

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