WAEC Past Questions and Answers - Page 3552

17,756.

As the plates of a charged variable capacitor are moved closer together, the potential difference between them

A.

increased

B.

decrease

C.

remains the same

D.

is doubled

Correct answer is B

No explanation has been provided for this answer.

17,757.

The magnitude of the gravitational force between two particles 0.10m apart is 10N. If the distance between them is increased to 0.20m, calculate the magnitude of the new force

A.

40.0N

B.

20.0N

C.

5.0N

D.

2.5N

Correct answer is D

\(g_1 = \frac{Gm_1m_2}{r^2_1}\)

\(m_1m_2 = \frac{gr^2_1}{G}\)

\(g_2 = \frac{Ggr^2_1}{Gr^2_2} = \frac{10 \times 0.1^2}{0.2^2}\)

= 2.5N

17,758.

Gross Domestic Product (GDP) at market price plus net factor income from abroad gives

A.

Gross capital formation

B.

Net capital formation

C.

Disposable income

D.

Gross national product

Correct answer is D

No explanation has been provided for this answer.

17,759.

Which of the following is not a benefit derived by Nigeria from the petroleum industry?

A.

Increased foreign exchange earning

B.

Establishment of refineries and petrochemical industries

C.

Employment of a greater proportion of the population

D.

Development of airports, seaports and other social infracstructures

Correct answer is C

No explanation has been provided for this answer.

17,760.

Devaluation of a currency in a country is likely to lead to

A.

Increasing population

B.

Increasing imports

C.

Exports becoming cheaper

D.

Reduced exports

Correct answer is C

No explanation has been provided for this answer.