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October 2019 paper 2 physics edexcel
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October 2019 paper 2 edexcel alevel question paper
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Please check the examination details below before entering your candidate informationCandidate surname Other names
Centre Number Candidate Number
Pearson Edexcel
International
Advanced Level
Tuesday 15 October 2019
Morning (Time: 1 hour 30 minutes) Paper Reference WPH12/01
Physics
International Advanced Subsidiary
Unit 2: Waves and Electricity
You must have: Total Marks
Scientific calculator, Ruler
Instructions
• Use black ink or ball-point pen.
• centre
Fill in the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
• Show all your working out in calculations and include units
where appropriate.
Information
• The total mark for this paper is 80.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• toIn questions marked with an asterisk (*), marks will be awarded for your ability
structure your answer logically showing how the points that you make are
related or follow on from each other where appropriate.
• The list of data, formulae and relationships is printed at the end of this booklet.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every question.
• Check your answers if you have time at the end. Turn over
P62787A
©2019 Pearson Education Ltd.
1/1/1/1/1/
*P62787A0132*
, SECTION A
Answer ALL questions.
For questions 1–10 select one answer from A to D and put a cross in the box .
If you change your mind, put a line through the box and then
mark your new answer with a cross .
1 The resistance of some electrical components decreases as the applied potential
difference increases.
Which row of the table contains two components that behave in this way?
A diode ohmic conductor
B ohmic conductor filament lamp
C negative temperature coefficient thermistor diode
D negative temperature coefficient thermistor filament lamp
(Total for Question 1 = 1 mark)
2
*P62787A0232*
,2 The circuit shows a resistor of resistance R connected to a cell of e.m.f. ο and internal
resistance r. When the current in the circuit is I the terminal potential difference is V.
ο
r
I
R
Which of the following is an expression for the power P dissipated in the internal
resistance of the cell?
A P = I (οíV )
B P = I2 R
C P=Iο
D P = V2/r
(Total for Question 2 = 1 mark)
3 Light travels at a speed of 2.3 u 108 m sí in water and 2.0 u 108 m sí in glass.
The refractive index of glass is 1.5
Which of the following expressions can be used to determine the refractive index
of water?
(2.3 × 108 ) × 1.5
A
(2.0 × 108 )
(2.0 × 108 ) × 1.5
B
(2.3 × 108 )
(2.0 × 108 )
C
(2.3 × 108 ) × 1.5
(2.3 × 108 )
D
(2.0 × 108 ) × 1.5
(Total for Question 3 = 1 mark)
3
*P62787A0332* Turn over
, 4 Ultraviolet light is incident on a metal surface and photoelectrons are released.
The number of photoelectrons released per second is N and the maximum kinetic energy
of the released electrons is Ek.
Which of the following pairs of graphs shows how N and Ek vary with the intensity I of
the incident light?
N Ek
A
I I
N Ek
B
I I
N Ek
C
I I
N Ek
D
I I
(Total for Question 4 = 1 mark)
4
*P62787A0432*
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