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I declare this is my own work.
A-level PHYSICS
Paper 2
Time allowed: 2 hours
Materials For Examiner’s Use
For this paper you must have:
• a pencil and a ruler Question Mark
• a scientific calculator • a Data and Formulae Booklet • a protractor. 1
2
Instructions
• Use black ink or black ball-point pen. 3
• Fill in the boxes at the top of this page.
4
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write outside the 5
box around each page or on blank pages.
6
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want to be 7–31
marked.
TOTAL
• Show all your working.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 85.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
,*JUN217408201*
IB/M/Jun21/E7 7408/2
,
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2
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Section A
Answer all questions in this section.
0 1 A capacitor of capacitance 63 pF is made from two parallel metal plates
separated by an air gap.
The capacitor is charged so that it stores a charge of 7.6 × 10−10 C; it is then isolated.
A sheet of mica of dielectric constant 6.0 is inserted between the plates so that it completely
fills the space between them. The mica does not discharge the capacitor and does not
change the separation of the plates.
0 1 .1 Explain what is meant by a dielectric constant of 6.0
[1 mark]
0 1
.2 Mica is made up of polar molecules. As the mica is inserted, the capacitance of the
capacitor changes.
Explain how the polar molecules cause this change in capacitance.
[3 marks]
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IB/M/
Distribution of this document is illegal
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level PHYSICS
Paper 2
Time allowed: 2 hours
Materials For Examiner’s Use
For this paper you must have:
• a pencil and a ruler Question Mark
• a scientific calculator • a Data and Formulae Booklet • a protractor. 1
2
Instructions
• Use black ink or black ball-point pen. 3
• Fill in the boxes at the top of this page.
4
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write outside the 5
box around each page or on blank pages.
6
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want to be 7–31
marked.
TOTAL
• Show all your working.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 85.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
,*JUN217408201*
IB/M/Jun21/E7 7408/2
,
, Stuvia.com - The Marketplace to Buy and Sell your Study Material
2
D
o
n
o
t
w
r
i
t
e
o
u
t
s
i
d
e
t
h
e
b
o
x
Section A
Answer all questions in this section.
0 1 A capacitor of capacitance 63 pF is made from two parallel metal plates
separated by an air gap.
The capacitor is charged so that it stores a charge of 7.6 × 10−10 C; it is then isolated.
A sheet of mica of dielectric constant 6.0 is inserted between the plates so that it completely
fills the space between them. The mica does not discharge the capacitor and does not
change the separation of the plates.
0 1 .1 Explain what is meant by a dielectric constant of 6.0
[1 mark]
0 1
.2 Mica is made up of polar molecules. As the mica is inserted, the capacitance of the
capacitor changes.
Explain how the polar molecules cause this change in capacitance.
[3 marks]
Downloaded by: Nipsey |
IB/M/
Distribution of this document is illegal
