All multiple choice questions must be answered with a cross in the box
for the correct answer from A to D.
If you change your mind about an answer, put a line through the box and then
mark your new answer with a cross
...
All multiple choice questions must be answered with a cross in the box
for the correct answer from A to D.
If you change your mind about an answer, put a line through the box and then
mark your new answer with a cross .
1 Which of the following best describes the newton as used in physical measurements?
A base quantity
B base unit
C derived quantity
D derived unit
(Total for Question 1 = 1 mark
Questions 2 and 3 refer to the following information.
A ray of light, in air, is incident on the edge of a triangular glass prism as shown.
The critical angle for a light ray meeting a glass to air boundary is 35°.
A
D
C
B
60°
2 Which path, A, B, C or D, will the ray follow?
A B C D
(Total for Question 2 = 1 mark)
3 Which of the following gives the value of the refractive index of the glass?
A sin35
B
1
sin35
C sin−1 1
35
D
1
1
35
sin −1
(Total for Question 3 = 1 mark)4 *P67086A0424*
Questions 4 and 5 refer to the following information.
The speed v of a transverse wave on a string is given by
v =
Tμ
where µ is the mass per unit length of the string and T is the tension in the string.
4 µ can be calculated from measurements of the mass and length of the string.
The percentage uncertainty in the measurement of mass is 0.4%.
The percentage uncertainty in the measurement of length is 0.05%.
Which of the following is the percentage uncertainty in the calculated value for µ?
A 0.4 + 0.05
B 0.4 − 0.05
C 0.4 × 0.05
D 0.4 ÷ 0.05
(Total for Question 4 = 1 mark)
5 A fixed length L of string is connected to a vibration generator and held under tension T
as shown. The frequency of the vibration generator is varied until, at a frequency f,
a standing wave with one antinode is observed. T is increased and the procedure is repeated.
vibration generator L
Which of the following describes the variation in f as T increases?
A decreases linearly
B decreases non-linearly
C increases linearly
D increases non-linearly
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