2021 WAEC (WASSCE) Physics Past Questions

From the words lettered A to D choose the word or group of words that best completes the sentence. This is not ...... house in the street but it is certainly bigger than yours.

1. A.a big
2. B.the big
3. C.the biggest✓ Correct
4. D.the bigger

He is Mr. Bello's son.........?

1. A.isn't he✓ Correct
2. B.isn't it
3. C.is it
4. D.he is

Firms in perfect competition break even in the long-run because

1. A.new firms can not enter the market due to copyright laws.
2. B.more firms can enter the industry due to attractive prof its.✓ Correct
3. C.marginal revenue is greater than marginal cost at all levels.
4. D.profits are not enough to repay traders' loans.

The engine of a train produces a force of 3000N when moving at 30.$ms^{-1}$. calculate the power of the engine

1. A.1.00 x 102W✓ Correct
2. B.3.00 x 104W
3. C.9.00 x 104W
4. D.3.00 x 105W

From the words lettered A to D below each of the following sentences, choose the word that is nearest in meaning to the underlined word. The president appointed staunch supporters of his policies as advisers.

1. A.trusted
2. B.critical
3. C.affluent✓ Correct
4. D.strong

Which of the following best explains the high rate of population growth in West Africa?

1. A.Birth control polices
2. B.High birth rate and low death rate
3. C.Low birth rate and high death rate
4. D.High rate of immigration✓ Correct

A metal rod of length 100cm is heated through 100ºC, calculate the change in length of the rod [linear expansivity of the material of the rod is 3 x 10$^{-5}$K$^{-1}$]

1. A.4mm✓ Correct
2. B.3mm
3. C.2mm
4. D.1mm

One of the factors that influences decentralization of power in a state is

1. A.A. weak central authority✓ Correct
2. B.B. widening political participation
3. C.C. maximum allegiance to the state
4. D.D. maximum loyalty

From the words lettered A to D, choose the word that best completes each of the following sentences. Occasionally, universities award _____ degrees to outstanding personalities.

1. A.ceremonial
2. B.honorary
3. C.temporary
4. D.respectable✓ Correct

The following compounds contain the same type of bonds except

1. A.sodium chloride✓ Correct
2. B.hydrogen chloride
3. C.magnesium chloride
4. D.potassium chloride
5. E.lithium chloride