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FORM TP 2016022 %. JANUARY 20I6

CARIBBEAN EXAMINATIONS COUNCIL

CARIBBEAN SECONDARY EDUCATION CERTIFICATE@
EXAMINATION

PHYSICS

Paper 02 - General Proficiency

2 hours 30 minutes

READ THE FOLLOWING INSTRUCTIONS CAREFULLY.

l. This paper consists of two sections: A and B.

2. Section A consists of THREE questions. Candidates must attempt ALL questions in

this section.

3. Section B consists of THREE questions. Candidates must attemptALL questions in

this section.

4. All answers MUST be written in this answer booklet.

5. Do NOT write in the margins.

6. All working MUST be clearly shown.

7. You may use a silent, non-programmable calculatoq but you should note that the use
of an inappropriate number of figures in answers will be penalized.

8. Mathematical tables are provided.

9. If you need to rewrite any answer and there is not enough space to do so on the
original page, you must use the extra lined page(s) provided at the back of this booklet.
Remember to draw a line through your original answer.

10. If you use the extra page(s) you MUST write the question number clearly in
the box provided at the top of the extra page(s) and, where relevant, include
the question part beside the answer.

DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO.

Copyright O 2015 Caribbean Examinations Council

All rights reserved.
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r SECTION A
-4-

Answer ALL questions.

You MUST write your answers in this answer booklet.

l. A motorcar travelled from rest and its velocity over an 8O-second period was measured. The
results are shown in Table l.

TABLE 1

Velocity, v (m s-t) 0 30 30 30 0

Time, r (s) 0 20 40 60 80

Point A B C D E

(a) On the grid provided on page 5, plot the graph of velocity against time. (7 marks)

(b) Use the graph to determine EACH of the following:

(i) The acceleration during the intervalAB

(4 marks)

(ii) The velocity of the motorcar after70 seconds (with the aid of dotted lines)

(l mark)

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(iii) The total distance travelled over the 80 second period

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(9 marks) f-.I21
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(c) From your graph, describe the velocity of the vehicle over the period BC.

(l mark)

(d) This question investigated how velocity varied with time. Define the term 'velocity'.

(3 marks)

Total25 marks

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r 2. (a)
-7 -

Complete the graphic below by drawing an arrow from each physical quantity to its
respective unit.

Physical Quantity Unit

Density
@
Moment
@
Linear Momentum 6)
\=/ (2 marks)

(b) Complete the following statements.

(i) Kinetic energy is defined as

(l mark)

(i i) The potential energy of a body is defined as

(1 mark)

(iii) The formula for the change in gravitational potential energy is

(l mark)

(iv) Waterfalls are commonly found across the Caribbean. Describe the energy changes
taking place in a waterfall.

(2 marks)

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A pendulum swings from A through B to C and returns to A as seen in Figure 1.

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Figure I
A and C are the furthest points with B being the midpoint.

State the type of energy that exists at

(i) A..............

(1 mark)

(iv) Another point D, is situated midway between A and B'

If the pendulum is retuming to A to complete an oscillation, explain which type

of energy is increasing and why.

At D, the type of energy increasing is ..........

Reason:

(2 marks)

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 r (d) Netball is a popular sport played across the Caribbean.
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If a netball has a mass of 0.4 kg and a velocity of 5 m s-r, calculate its kinetic energy.

(3 marks)

Total 15 marks

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3. (a) Table2 shows the type of thermometer, design feature and the reason for the design feature.
Complete the table by inserting the appropriate information.

TABLE 2

Type of Thermometer Design Feature Reason For Design Feature

Mercury-in-glass laboratory Narrow bore i-ft-l

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thermometer
l:Fil
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Constriction in bore Retaining a measured temperature i:E:

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'--r\-.--
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Thermocouple Ability to measure rapidly changing

temPeratures

(3 marks)
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(b) Define the upper and lower fixed points on the Celsius temperature scale and state their ::I$r
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respective values on that scale. -'-rtj
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j:{iii:
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(4 marks)

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(c) Figure 2 shows a sealed flask which contains a fixed mass of gas held at constant volume.

Pressure
gauge

Thermometer

Gas

Fluid

Ittll
Heat

Figure 2

When heated, the temperature and pressure of the gas increase as shown in Table 3.

TABLE 3

Pressure (Pa) Temperature (oC) Temperature (K)

l.l X 105 35

1.2 x lOs 63

1.3 x 105 9l

(i) Complete Table 3 by converting the temperatures to Kelvin. (3 marks)

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(ii) Is the 'Pressure Law'supported by this set of data? Explain.

(5 marks)

Total 15 marks

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SECTION B

Answer ALL questions.

You MUST write your answers in this answer booklet.

4. (a) (i) "The angle of incidence is equal to the angle of reflection". This is one of the laws
of reflection. State the other law.

(3 marks)

(ii) State THREE properties of the image in a plane mirror.

(3 marks)

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Figure 3 showsacarlocated 5 m behindatruckwhich is 8 m long. Assumetheexternal

mirror for the truck is a plane mirror and is in line with the front of the truck.

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Figure 3

(i) Calculate the image distance of the car as seen by the truck driver.

(2 marks)

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it
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(ii) State a reason why the sign shown in Figure 4 is more likely to be posted at the
back of a truck rather than a car.

IFYOU
CAN'T SEE
MY MIRRORS.
I CAN'T SEE
YOU.

Figure 4

(2 marks)

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(c) A ray of light passes through a block of material as shown in Figure 5.

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Figure 5

(i) If the refractive index of the material is I .3, calculate the angle of refraction in the
material given that the angle of incidence is 30o.

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(4 marks) l.s:
(i i) Ifthe refractive index ofthe material increased, why would the lateral displacement
of the ray increase also?

(l mark)

Total 15 marks

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A converging lens can be used to form real or virtual images.

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i.i:i+.--l (i) With reference to the focal lengh of the lens, describe the object distance required
Ii.Li':-l to produce EACH type of image.
f--lrl:1
+'-'J*-1
i:,1*ii:l
1:-Srl
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1.

ii-i*ll
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T-'_E-.'_l

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ti.€il
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t:.H'..1
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l_._+\'.i1 (2 marks)
+'.'-h+.1

(ii) State the orientation of EACH image so produced.

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[.-ff.]
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ti:tEjl
t'Sl
t.'-'E'.-.1

f:.t+:l (2 marks)
li'El
l:..{+i.1
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(iii) Complete the ray diagram shown in Figure 6.
l-'-\i'jl
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:.{ll
ji:lEi:l (2 marks)
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iei
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r (b) (i)
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Calculate the magnification where a lens produces an image height of 3.6 mm for
an object 2.4 mm in height.

(3 marks)

(i i) For the same magnification, calculate the image distance given that the object
distance is 20 cm.

(3 marks)

(iii) Calculate the focal length of this lens.

(3 marks)

Total 15 marks

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i-.--t 6. (a) Scientists use symbols when dealing with circuit diagrams in electricity. An electric
.'-'.'-i'.'-1
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circuit
is displayed in Figure 7.
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Figure 7

Write a description of this circuit in the space provided.

(6 marks)

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(b) A Physics class was given a circuit diagram as shown in Figure 8. Use Figure 8 to answer t-----.
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the three questions posed to the class. f.'n
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tift
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(i) Given that the formula for the equivalent resistance of two resistors R, and R, in t----..

RR- [.i-_-_'_'_

parallel is R: --'---'|---
calculate the equivalent resistance across BC.
' =*,
R+R-'
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(ii) Calculate the current flowing in the closed circuit. f---'s
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When the current in (b) (ii) flows, what is the power dissipated in the 3C) resistor?
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(3 marks)

Total 15 marks

END OF TEST

IF YOU FINISH BEFORE TIME IS CALLED. CHECK YOUR WORI( ON THIS TEST.

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EXTRA SPACE

If you use this extra page, you MUST write the question number clearly in the box provided.

Question No.

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