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Physics Past Questions and Answers

Waec Physics Questions

Question 951:

The molecular structure of a liquid is such that

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A The molecules have unlimited freedom of movement
B Molecular movement is restricted to vibration only
C Intermolecular collisions take place
D All molecules moves move with the same speed

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Question 952:

Which of the following statements about the mass and the weight of a body is not correct? its

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A Mass is a scalar quantity
B Weight is a function of the gravitational pull on it
C Mass on earth and on the moon is the same
D Weigh at the equatior and at the poles is the same

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Question 953:

An object weighs 60.0N in air, 48.2N in a certain liquid X, and 44.9N in water, Calculate the relative density of X

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A 3.300
B 1.279
C 0.932
D 0.782

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Question 954:

Calculate the change in volume when 90g of ice is completely melted. [density of water = 1g cm^-3, density of ice = 0.9cm^-3]

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A 0.00cm³
B 9.00cm³
C 10.00cm³
D 90.00cm³

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Question 955:

The diagram above represent displacement D, versus time, t graph of a progressive wave. Deduce the frequency of the wave

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A 20 Hz
B 10 Hz
C 5 Hz
D 4 Hz

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