OCR A Level Physics A H556/02 Exploring physics Sample Question Paper
INSTRUCTIONS
• Use black ink. You may use an HB pencil for graphs and
... [Show More] diagrams.
• Complete the boxes above with your name, centre number and candidate number.
• Answer all the questions.
• Write your answer to each question in the space provided.
• Additional paper may be used if required but you must clearly show your candidate
number, centre number and question number(s).
• Do not write in the bar codes.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended responses will be assessed in questions marked with an asterisk (*).
• This document consists of 28 pages.
SPECIMEN
2
© OCR 2016 H556/02
SECTION A
You should spend a maximum of 20 minutes on this section.
Answer all the questions.
1 To find the density ρ of a metal wire, a student makes the following measurements:
length l = 100 ± 1 mm
diameter d = 2.50 ± 0.05 mm
mass m = 4.00 ± 0.02 g
The equation
ld
m
2
4
is used to calculate the density of the metal.
What is the percentage uncertainty in the answer?
A ± 2.5%
B ± 3.5%
C ± 4.5%
D ± 5.5%
Your answer
[1]
2 A copper wire is connected across a cell. The conduction electrons within the copper wire
move.
Which statement is correct about these electrons?
A They drift towards the negative end of the cell.
B They have random speeds because of collisions with other electrons.
C They travel through the wire at the speed of light.
D They collide with vibrating copper ions.
Your answer
[1]
SPECIMEN
3
© OCR 2016 H556/02 Turn over
3 A resistor R, an ammeter and a switch are connected in series to a battery.
The switch S is open. The voltmeter reading is 9.0 V and the ammeter reading is zero.
With S closed, the voltmeter reading is 6.0 V and ammeter reading is 2.0 A.
What is the internal resistance of the battery?
A 1.5
B 3.0
C 4.5
D 6.0
Your answer
[1]
4 Which of the following statements is/are true about photons?
1 All photons travel at the same speed in a vacuum.
2 Photons have no charge.
3 The energy of a photon depends only on its frequency.
A 1, 2 and 3
B Only 2 and 3
C Only 1 and 2
D Only 2 [Show Less]