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Physics Past Questions and Answers

Waec Physics Questions

Question 1441:

Which of the following properties is not applicable to X-rays? They

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A Travel in straight lines
B Travel with the speed of light
C Are deflected by magnetic field
D Affect photographic films

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Question 1442:

Uranium-234 disintegrated to form Thorium-230 by emitting

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A Alpha particles
B Gamma rays
C Beta negative rays
D Beta positive rays

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Question 1443:

The change in mass of fuel during a nuclear reaction is 2.0 x 10^-27 kg. Calculate the amount of energy released. (Speed of light = 2.0 x 10⁸ms^-1)

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A 1.8 x 10^-10J
B 9.0 x 10^-11J
C 6.0 x 10^-19J
D 1.2 x 10^-45J

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Question 1444:

Nuclear fusion is not used as a source of enegy because

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A Very high temperature is needed for the reaction
B The fuel for the reaction is not easy to obtain
C Less energy is released
D The reaction is too slow

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Question 1445:

Using the circuit diagram above. Calculate the total charge in the circuit

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A 80\(\mu C\)
B 35\(\mu C\)
C 20\(\mu C\)
D 16\(\mu C\)

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