Wednesday 20 May 2026 – Afternoon
AS Level Physics B (Advancing Physics)
H157/02 Physics in depth
Time allowed: 1 hour 30 minutes
You must have:
* 2 6 5 4 0 8 4 3 3 8 *
• the Data, Formulae and Relationships Booklet
You can use:
• a scientific or graphical calculator
• a ruler (cm/mm)
* H 1 5 7 0 2 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
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 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.
© Cambridge OCR 2026 [601/4744/1] Cambridge OCR is an exempt Charity
DC (ST/TC) 368070/4 Turn over
, 2
Section A
1 A stored photograph of a tree is 3024 # 4032 pixels.
The stored photograph file is compressed. The size of the stored photograph file is 952 kilobytes.
(a) Calculate the mean number of bits per pixel in the photograph.
Use 1 kilobyte = 1024 bytes.
Give your answer to 3 significant figures.
Mean number of bits per pixel = ......................................................... [4]
(b) The stored photograph is edited by increasing every pixel value by the same amount.
State the effect this has on the appearance of the stored photograph.
..........................................................................................................................................................
..................................................................................................................................................... [1]
© Cambridge OCR 2026
, 3
2 A student is told that unpolarised sunlight is partially polarised when it is reflected from the
surface of water.
Describe how to test this using a polarising filter and describe the observation made.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..................................................................................................................................................... [3]
© Cambridge OCR 2026 Turn over
AS Level Physics B (Advancing Physics)
H157/02 Physics in depth
Time allowed: 1 hour 30 minutes
You must have:
* 2 6 5 4 0 8 4 3 3 8 *
• the Data, Formulae and Relationships Booklet
You can use:
• a scientific or graphical calculator
• a ruler (cm/mm)
* H 1 5 7 0 2 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
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 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.
© Cambridge OCR 2026 [601/4744/1] Cambridge OCR is an exempt Charity
DC (ST/TC) 368070/4 Turn over
, 2
Section A
1 A stored photograph of a tree is 3024 # 4032 pixels.
The stored photograph file is compressed. The size of the stored photograph file is 952 kilobytes.
(a) Calculate the mean number of bits per pixel in the photograph.
Use 1 kilobyte = 1024 bytes.
Give your answer to 3 significant figures.
Mean number of bits per pixel = ......................................................... [4]
(b) The stored photograph is edited by increasing every pixel value by the same amount.
State the effect this has on the appearance of the stored photograph.
..........................................................................................................................................................
..................................................................................................................................................... [1]
© Cambridge OCR 2026
, 3
2 A student is told that unpolarised sunlight is partially polarised when it is reflected from the
surface of water.
Describe how to test this using a polarising filter and describe the observation made.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..................................................................................................................................................... [3]
© Cambridge OCR 2026 Turn over
