"Time" question number distribution across years

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Physics index on skoool nigeria

WAEC questions for "Physics :: Time"

Q1

The following properties of a solid are measured on earth:

I. weight

II. specific heat capacity

III. density.

Which of the properties will have a different value if measured in space?

A

I only

B

II only

C

III only

D

II and III only

E

**Answer:** A

Q2

A screw jar with tommy bar of lenght 12cm is used to raise a car through a vertical height of 25cm by turning the tommy bar through 50 revolutions. Calculate the approximate velocity ratio of the jack [π=3.14]

A

21

B

38

C

48

D

151

E

**Answer:** D

Q3

Two simple pendula x and y make 400 and 500 oscillations respectively in equal time. If the period of oscillation respectively in equal time. If the period of oscillation of x is 1.5 seconds, what is the period of oscillation of y?

A

0.053 s

B

0.83s

C

1.20 s

D

1.50 s

E

1.88 s

**Answer:** C

Q4

A ball of mass 0.5kg moving at 10ms^{-1} collides with another ball of equal mass at rest. If the two balls move off together after the impact, calculate their common velocity

A

0.2ms^{-1}

B

0.5ms^{-1}

C

5.0ms^{-1}

D

10.ms^{-1}

E

20.0ms^{-1}

**Answer:** C