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Actual 2024 AQA A-level PHYSICS 7408/3A Paper 3 Section A Merged Question Paper + Mark Scheme + Insert CA$11.50   Add to cart
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Actual 2024 AQA A-level PHYSICS 7408/3A Paper 3 Section A Merged Question Paper + Mark Scheme + Insert

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Actual 2024 AQA A-level PHYSICS 7408/3A Paper 3 Section A Merged Question Paper + Mark Scheme + Insert

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  • February 2, 2024
  • September 25, 2024
  • 60
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • actual 2024 aqa a level physics 74083a paper 3 se

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  • 2024 AQA
  • 2024 AQA

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2023 AQA A-level PHYSICS 7408/3A Paper 3 Section A Question Paper & Mark scheme (Merged)
June 2023 [VERIFIED]
A-level
PHYSICS
Paper 3
Section A

Thursday 15 June 2023 Morning Time allowed: The total time for
Materials
both sections of this paper is
For this paper you must have: 2 hours. You are advised to
• a pencil and a ruler spend approximately
• a scientific calculator
• a Data and Formulae Booklet 70 minutes on this section.
• a protractor.
For Examiner’s Use
Instructions
• Use black ink or black ball-point pen. Question Mark
• Fill in the boxes at the top of this page. 1
• Answer all questions. 2
• You must answer the questions in the spaces provided. Do not write
3
outside the box around each page or on blank pages.
• If you need extra space for your answer(s), use the lined pages at the end of TOTAL
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 marked.
• Show all your working.

Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 45.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.



*JUN2374083A01*
IB/M/Jun23/E10 7408/3A

, 2

Do not write
outside the
Section A box


Answer all questions in this section.


0 1 A stroboscope emits bright flashes of white light.
The duration of each flash and the frequency of the flashes can be varied.

Table 1 shows information about the stroboscope.

Table 1


Minimum Maximum

Duration of each flash / μs 60 300

Frequency of flashes / Hz 1 150


The duration of each flash is T1.
The time from the start of a flash to the start of the next flash is T2.
T1
The duty cycle of a stroboscope is defined as .
T2

0 1 . 1 What is the maximum duty cycle of the stroboscope?
Tick () one box.
[1 mark]


6.0 × 10−5


3.0 × 10−4


9.0 × 10−3


4.5 × 10−2




*02*
IB/M/Jun23/7408/3A

, 3

Do not write
outside the
0 1 . 2 Figure 1 shows images produced in an experiment in which a bouncing ball is box

illuminated by a stroboscope.
The stroboscope flashes at a constant frequency.

Figure 1




Suggest why T1 must be very short for this experiment.
[1 mark]




Question 1 continues on the next page




Turn over ►

*03*
IB/M/Jun23/7408/3A

, 4
Do not write
outside the
Figure 2 shows the first six images starting with n = 0, where n is the image number. box



Figure 2




The images are used to determine:
H, the vertical distance from the bottom of the ball to the floor when n = 0
h, the vertical distance from the bottom of the ball to the floor for each non-zero
value of n.

The n = N image is produced at the instant that the ball hits the floor for the first
time. For n between 0 and N it can be shown that
un g
H− h = 0 +
n 2
f 2 f

where
u0 is the vertical velocity of the ball when n = 0
g is the acceleration due to gravity
f is the frequency of the flashes.




*04*
IB/M/Jun23/7408/3A

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