OXFORD CAMBRDGE
AND RSA 2024
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OCR 2024
2024
[Type the company address]
, Oxford Cambridge and RSA
Monday 17 June 2024 – Morning
A Level Physics A
H556/03 Unified physics
Time allowed: 1 hour 30 minutes
You must have:
• the Data, Formulae and Relationships Booklet
You can use:
• a scientific or graphical calculator
• a ruler (cm/mm)
Please write clearly in black ink. Do not write in the barcodes.
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INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined page at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answers should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 20 pages.
ADVICE
• Read each question carefully before you start your answer.
OCR is an exempt Charity
Turn over
,
, 2
Answer all the questions.
1 A flute is a musical instrument made from a long tube that is open at both ends.
A stationary sound wave in the tube produces a musical note.
The lowest frequency note that a standard flute produces in air is 262 Hz.
The speed of sound in air at a temperature of 20 °C is 340 m s–1.
(a) Show that a standard flute has an approximate length of 0.65 m.
[3]
(b) In an ideal gas, the speed v of sound is given by
⎛γRT⎞1/2
v=
⎝M⎠
where
γ is a dimensionless constant that depends on the gas
R is the molar gas constant
T is the absolute temperature
M is the molar mass of the gas.
The table below shows values of γ and M for both air and helium.
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