WAEC Past Questions and Answers - Page 3593

17,962.

An iron rod is moved from the earth to the moon. Which of the following properties of the rod would remain unchanged? i. mass ii. weight iii. relative density

A.

i only

B.

ii only

C.

iii only

D.

i and iii only

Correct answer is D

No explanation has been provided for this answer.

17,963.

The function of the part labelled V in the diagram is the

A.

manufacture of food

B.

storage of food

C.

secretion of digestive enzymes

D.

protection of the radicle

E.

absorption of mineral salts

Correct answer is D

No explanation has been provided for this answer.

17,964.

The diagram above illustrates three forces T1, T2 and 100N in equilibrium. Determine the magnitude of T1

A.

100 tan 30o

B.

\(\frac{100}{\cos 30^o}\)

C.

200 sin 301

D.

\(\frac{200}{tan 30^o}\)

Correct answer is A

No explanation has been provided for this answer.

17,965.

It is always not possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the

A.

De broglie's law

B.

Heisenberg's uncertainty principle

C.

Compton effect

D.

Frank-Hertz experimental law

E.

Wave particle paradox

Correct answer is B

No explanation has been provided for this answer.