IBphysicstest.doc

Section A
For each question, choose the answer you consider to be the best and indicate your choice in the brace provided.
(2 point for each, 30 points)
(1) The order of magnitude of 36500 is ( )
A. B. C. D.
(2) The order of magnitude of 0.00013 is ( )
A. B. C. D.
(3) The ratio of mass of Sun () to the mass of Earth ()is approximately equal to ( )
A. B. C. D.
(4) Which one of the following is a symbol for a fundamental
quantity ( )
A. Hz B. N C. kg D. Pa
(5) Which one of following is measured in fundamental units
( )
A. velocity B. electric charge
C. electric current D. force
(6) Which one of following has three significant figures? ( )
A. 22.2 B. 1007
C. 0.024 D. 0.51
(7) The addition of 7.66m and 14.2m is ( )
A. 21.86m B. 21.8m
C. 21.9m D. 21.82m
(8) If a measurement is written as, the absolute
uncertainty is ( )
A. 9.8 B. 9.8m
C. 0.2 D. 0.2m
(9) The sum of and is ( )
A. B.
C. D.
(10) The subtraction of and is ( )
A. B.
C. D.
(11) Which one of following is a vector quantity ( )
A. Work B. Time
C. Velocity D. Mass
(12) Which of the following contains only fundamental SI units? ( )

(13) Consider the following measured quantities
(a) (b)
Which alternative is the best when the accuracy and precision for a and b are compared? ( )

a
b
A
Low accuracy
Low precision
B
Low accuracy
High precision
C
High accuracy
Low precision
D
High accuracy
High precision
(14) A voltmeter has a zero offset error of 1.2V. This fault will affect: ( )
A. neither the precision nor the accuracy of the readings
B. only the precision of the reading
C. only the accuracy of the reading
D. both the precision and accuracy of the readings
(15) The diagram below shows a boat crossing a river with a velocity of 4 ms-1 north. The current flows at 3 ms-1 west. The resultant magnitude of the velocity of the boat will be: ( )

A. 3 ms-1 B. 4 ms-1
C.5 ms-1 D. 7 ms-1