AQA A-LEVEL PHYSICS 7408/3A Paper 3 Section A Question Paper + Mark scheme [MERGED] June 2022

AQA

A-LEVEL

PHYSICS

7408/3A

Paper 3 Section A

Question Paper + Mark scheme [MERGED]

June 2022

*JUN2274083A01*

IB/M/Jun22/E8 7408/3A

For Examiner’s Use

Question Mark

1

2

3

4

TOTAL

Materials

For this paper you must have:

• a pencil and a ruler

• a scientific calculator

• a Data and Formulae Booklet

• a protractor.

Instructions

• Use black ink or black ball-point pen.

• Fill in the boxes at the top of this page.

• Answer all questions.

• You must answer the questions in the spaces provided. Do not write

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 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.

Please write clearly in block capitals.

Centre number Candidate number

Surname

Forename(s)

Candidate signature

I declare this is my own work.

A-level

PHYSICS

Paper 3

Section A

Time allowed: The total time for

both sections of this paper is

2 hours. You are advised to

spend approximately

70 minutes on this section.

2

*02*

IB/M/Jun22/7408/3A

Do not write

outside the Section A box

Answer all questions in this section.

0 1 Figure 1 shows apparatus used to measure the speed of sound in a steel rod.

Figure 1

The steel rod is suspended from a beam using rubber bands.

When the hammer is in contact with the end L of the steel rod, a circuit is completed

and the signal generator is connected to the oscilloscope.

Figure 2 shows the waveform then displayed on the oscilloscope.

3

*03*

Turn over ►

IB/M/Jun22/7408/3A

Do not write

outside the

Figure 2 box

0 1 . 1 Which control on the oscilloscope should be used to centre the trace vertically on the

screen?

Tick () one box.

[1 mark]

X-shift

Y-gain

Y-shift

Question 1 continues on the next page

)