*1918163937*
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 pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer 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 90.
• 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 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/8651/3] DC (DE/FC) 355460/5
OCR is an exempt Charity
Turn over
, 2
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 An electromagnetic wave travels in a vacuum.
A second electromagnetic wave travelling in a vacuum
has a smaller wavelength.
Which row describes how the frequency and velocity of the second electromagnetic
wave compares with the frequency and velocity of the original wave?
Frequency Velocity
A larger equal
B larger larger
C smaller equal
D smaller larger
Your answer
2 A sound wave travels from air to water. The speed of the sound wave is directly
proportional to its wavelength.
The wavelength of the sound wave in air is 80 cm.
The speed of the sound wave increases by a factor of 4 when it enters the water.
What is the wavelength of the sound wave in the water?
A 20 cm
B 40 cm
C 160 cm
D 320 cm
Your answer
3 What is the function of the neutral wire in an electrical device?
A To cause a potential difference between this wire
and the earth wire
B To complete the circuit from the device back to the
power supply
© OCR 2025
, 3
C To melt if the current through it is too high due to a
fault
D To provide a low resistance path for the current if
there is a fault
Your answer
4 A scientist is doing an experiment using a radioactive source that emits only gamma
rays.
Which safety procedure does not reduce irradiation of the scientist?
A The scientist places a lead shield between
themselves and the source.
B The scientist points the source away from them.
C The scientist uses very long tongs to handle the
source.
D The scientist wears gloves while handling the
source.
Your answer
5 Red light has a maximum wavelength of 750 nm.
Which part of the electromagnetic spectrum contains radiation with a wavelength of
850 nm?
A infrared
B ultraviolet
C visible light
D X-ray
Your answer
6 A ball is floating on the surface of some water.
Waves are created on the surface of the water as shown.
Ball
© OCR 2025 Turn over
, 4
Direction of waves
Which arrow shows the direction of movement of the ball due to the water waves?
A B
C D
Your answer
[1]
7 Which value could be the speed of a person running?
A 0.50 m / s
B 5.0 m / s
C 50 m / s
D 500 m / s
Your answer
8 Which row describes the domestic mains supply in the UK?
Type of voltage
Voltage (V) Frequency (Hz)
output
A 50 230 alternating
B 50 230 direct
C 230 50 alternating
D 230 50 direct
Your answer
9 The diagram shows a ray of light travelling from air into glass.
© OCR 2025
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 pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer 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 90.
• 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 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/8651/3] DC (DE/FC) 355460/5
OCR is an exempt Charity
Turn over
, 2
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 An electromagnetic wave travels in a vacuum.
A second electromagnetic wave travelling in a vacuum
has a smaller wavelength.
Which row describes how the frequency and velocity of the second electromagnetic
wave compares with the frequency and velocity of the original wave?
Frequency Velocity
A larger equal
B larger larger
C smaller equal
D smaller larger
Your answer
2 A sound wave travels from air to water. The speed of the sound wave is directly
proportional to its wavelength.
The wavelength of the sound wave in air is 80 cm.
The speed of the sound wave increases by a factor of 4 when it enters the water.
What is the wavelength of the sound wave in the water?
A 20 cm
B 40 cm
C 160 cm
D 320 cm
Your answer
3 What is the function of the neutral wire in an electrical device?
A To cause a potential difference between this wire
and the earth wire
B To complete the circuit from the device back to the
power supply
© OCR 2025
, 3
C To melt if the current through it is too high due to a
fault
D To provide a low resistance path for the current if
there is a fault
Your answer
4 A scientist is doing an experiment using a radioactive source that emits only gamma
rays.
Which safety procedure does not reduce irradiation of the scientist?
A The scientist places a lead shield between
themselves and the source.
B The scientist points the source away from them.
C The scientist uses very long tongs to handle the
source.
D The scientist wears gloves while handling the
source.
Your answer
5 Red light has a maximum wavelength of 750 nm.
Which part of the electromagnetic spectrum contains radiation with a wavelength of
850 nm?
A infrared
B ultraviolet
C visible light
D X-ray
Your answer
6 A ball is floating on the surface of some water.
Waves are created on the surface of the water as shown.
Ball
© OCR 2025 Turn over
, 4
Direction of waves
Which arrow shows the direction of movement of the ball due to the water waves?
A B
C D
Your answer
[1]
7 Which value could be the speed of a person running?
A 0.50 m / s
B 5.0 m / s
C 50 m / s
D 500 m / s
Your answer
8 Which row describes the domestic mains supply in the UK?
Type of voltage
Voltage (V) Frequency (Hz)
output
A 50 230 alternating
B 50 230 direct
C 230 50 alternating
D 230 50 direct
Your answer
9 The diagram shows a ray of light travelling from air into glass.
© OCR 2025
