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Physics Past Questions and Answers

Waec Physics Questions

Question 931:

The minimum energy required to remove an electron from an atom is known as

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A Excitation energy
B Ionization energy
C Binding energy
D Photon energy

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Question 932:

Nuclear fission is preferred to nuclear fusion in the generation of energy because

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A Very high temperature are required for fusion
B The raw material of fusion are not easily obtained
C Energy obtained from fusion is relatively smaller
D The by product of fusion are very dangerous

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Question 933:

Which of the following reactions represents nuclear fusion?

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A \(^2_1H + ^2_1H \to ^3_2He + ^1_0n\)
B \(^235_92U + ^1_0n \to ^145_56Ba + ^90_36Kr \)
C \(^234_90TH \to ^0_-1n + ^3_2He + ^1_0Pa\)
D \(^238_92U \to ^4_2H \to ^3_2He + ^234_90Th\)

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Question 934:

The diagram above shows the resultant electric field pattern due to two electric point charges P and S. Which of the following statements is correct?

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A P is negatively charged while S is positively charged
B P is positively charged while S is negatively charged
C Both P and S are positively charge
D Both P and Q are negatively charged

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Question 935:

The bar magnet illustrated in the diagram above picks up an unmagnetised steel nail X. In turn, X picks up a similar nail Y and so on. The nail are said to be magnetised by

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A Conduction
B Single touch
C Induction
D Divided touch

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