WAEC Physics Past Questions & Answers - Page 303

1,511.

An object weighs 10.0 N in air and 7.0 N in water. What is its weight when immersed in a liquid of relative density 1.5?

A.

4.50N

B.

4.67N

C.

5.50N

D.

6.67N

E.

8.50N

Correct answer is C

No explanation has been provided for this answer.

1,512.

A simple pendulum makes 50 oscillations in one minute. What is its period of oscillation?

A.

0.02s

B.

0.20s

C.

0.83s

D.

1.20s

E.

50.00s

Correct answer is D

No explanation has been provided for this answer.

1,513.

A force F is applied to a body P as shown in the diagram above. If the body P moves through a distance r, which of the following represents the work done?

A.

Fx

B.

Fcosθ/x

C.

Fx tanθ

D.

Fx sinθ

E.

Fx cosθ

Correct answer is E

No explanation has been provided for this answer.