WAEC Physics Past Questions & Answers - Page 211

1,052.

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.

1,053.

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.

1,054.

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.