WAEC Past Questions and Answers - Page 3234

16,166.

A body of mass M kg rests on a plane inclined at an angle \(\theta\) to the horizontal. The component of the weight of the body parallel to the plane is

A.

Mg sin \(\theta\)

B.

Mg cos \(\theta\)

C.

Mg tan \(\theta\)

D.

Mg sec \(\theta\)

Correct answer is A

No explanation has been provided for this answer.

16,167.

Which of the following types of thermometers can be used to measure a range of temperature from -50°C to 50°? i. Clinical ii. Mercury iii. Alcohol-in-glass

A.

i only

B.

ii only

C.

iii only

D.

i and ii only

Correct answer is C

No explanation has been provided for this answer.

16,168.

The change of state from solid to liquid occurs

A.

at constant temperature

B.

when temperature is lower than the boiling point

C.

when temperature is just near freezing point

D.

when temperature is equal to the boiling point

Correct answer is A

No explanation has been provided for this answer.

16,169.

The temperature at which the water vapor in the air saturates the air and begins to condense is known as

A.

dew point

B.

critical point

C.

boiling point

D.

triple point

Correct answer is A

No explanation has been provided for this answer.

16,170.

Heat transfer by conduction is similar to wave motion because

A.

there is increase in temperature

B.

transfer of materials is involved

C.

charged particles vibrates at right angles

D.

no transfer of materials is involved

Correct answer is D

No explanation has been provided for this answer.