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Fundamental Quantities and Units
1. Which of the following is a fundamental quantity?
a. Potential Difference c. Current
b. Resistance d. Charge
2. The Joule is equal to one
a. Kilogram-metre c. kilowatt-hour
b. Newton-metre d. calorie
3. A girl determines the specific heat capacity of water to be 3985.4 J kg-1 K-1. Her teacher points out that the experiment is not very precise and so the value should be given to only TWO significant figures. How should she write the answer?
a. 3.9 x 103 J kg-1 K-1 c. 4.0 x 103 J kg-1 K-1
b. 3.99 x 103 J kg-1 K-1 d. 4000 J kg-1 K-1
4. Which of the following is NOT the symbol of a base unit in SI?
a. °C c. kg
b. A d. s
5. Which SI prefix means that the base unit is multiplied by a factor of 103?
a. Kilo c. mega
b. Micro d. giga
6. The density of a gas under certain conditions is found to be 1.293 x 10-3 kg m-3. Written in decimal form this value is
a. 0.0001293 kg m-3 c. 0.431 kg m-3
b. 0.001293 kg m-3 d. 0.3879 kg m-3
7. The dice in a backgammon set are cubes with each side measuring 10mm. What is the volume of one of these dice?
a. 1 x 10-9 m3 c. 1 x 10-3 m3
b. 1 x 10-6 m3 d. 1 m3
8. The frequency of Radio Liberty in Barbados is 98.1MHz. Using scientific notation this might be
a. 9.81 x 10-2 Hz c. 9.81 x 106 Hz
b. 9.81 x 10-4 Hz d. 9.81 x 107 Hz
9. One coulomb of electric charge passes a point in a circuit when a current of 1 ampere flows for 1s. How much charge passes if one microampere flows for one millisecond?
a. 10-12 coulomb c. 10-3 coulomb
b. 10-9 coulomb d. 103 coulomb
10. Which of the following quantities do not have a unit?
I. Work
II. Relative density
III. Efficiency
I. Work
II. Relative density
III. Efficiency
a. I only c. I and II only
b. II only d. II and III only
Measurement 1
1.
The diagram represents a pendulum with amplitude
2° (not drawn to scale). The bob swings from its highest point X to its lowest
point Y in 0.25s. If the amplitude (angle a) is changed to 6° the period of the
pendulum will be
a.
0.5s c.
1.5s
b.
1.0s d.
3.0s
2.
The mass of a hair was measured and found to be
0.00905 g. The number of significant figures in this value is
a.
2 c.
5
b.
3 d.
6
3.
Which statement gives the gradient and
x-intercept in the graph below?
gradient x-intercept
gradient x-intercept
a.
0.2 -15
b.
0.3 3
c.
0.2 15
d.
0.3 -15
4.
Which instrument would be best for the measuring
of the diameter of a human hair?
a.
Micrometer c.
anemometer
b.
Hygrometer d.
vernier calliper
5.
A boy is asked to find the period of oscillation
of a pendulum. Listed below are three points from his method. Which of them are
good ideas if he wants to obtain an accurate value?
I. Start the watch just as the pendulum bob is released
II. Time 50 complete oscillations
III. Repeat the procedure to obtain a second value.
I. Start the watch just as the pendulum bob is released
II. Time 50 complete oscillations
III. Repeat the procedure to obtain a second value.
a.
II only c.
II and III only
b.
I and II only d.
I, II and III
6.
100 cm3 of water has a mass of 100 g.
What is the mass of an object, made of material of relative density 5.0, whose
volume is 500 cm3?
a.
20 g c.
1 000 g
b.
500 g d.
2 500 g
7.
Estimate the area of this shape.
a.
8.5 cm2 c.
9.5 cm2
b.
9 cm2 d.
10 cm2
8.
A rectangular block of copper, measuring 1 cm x 3 cm x 4 cm, has a mass of 108 g. The
density of copper is
a.
9 000 kg m-3 c. 9 kg m-3
b.
1 296 kg m-3 d. 0.9 kg m-3
9.
The reading shown on the vernier scale below is
a.
6.32 cm c.
6.2 cm
b.
6.31 cm d.
6.02 cm
10.
A quantity P is related to another quantity Q by
the following equation:
A straight line graph may be obtained by
plotting
a.
P against Q c. P
against square root of Q
b.
P against Q2 d.
P2 against Q
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