Physics > QUESTIONS & ANSWERS > AQA A-level PHYSICS 7408/3BB Paper 3 Section B Medical physics Question Paper + Mark scheme (Merged) (All)

AQA A-level PHYSICS 7408/3BB Paper 3 Section B Medical physics Question Paper + Mark scheme (Merged) Grade A+

Document Content and Description Below

AQA A-level PHYSICS 7408/3BB Paper 3 Section B Medical physics Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final *JUN2174083bB01* IB/M/Jun21/E6 7408/3BB For Examiner’s Use ... Question Mark 1 2 3 4 5 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 35. •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 B Medical physics Time allowed: The total time for both sections of this paper is 2 hours. You are advised to spend approximately 50 minutes on this section. 2 *02* IB/M/Jun21/7408/3BB Do not write outside the box Section B Answer all questions in this section. 0 1 A hospital uses the radioactive isotope technetium-99m as a tracer. Technetium-99m is produced using a Molybdenum-Technetium generator on site at the hospital. 0 1 . 1 Explain why the value of the half-life of technetium-99m: • makes it suitable for use as a tracer • means that it must be produced in a generator on site. [4 marks] 0 1 . 2 Technetium-99m emits only gamma rays. Explain why this makes technetium-99m suitable for use as a tracer. [4 marks] 3 *03* Turn over ► IB/M/Jun21/7408/3BB Do not write outside the box 0 1 . 3 A gamma camera can be used to form images when using a tracer. Figure 1 shows a photomultiplier tube from a gamma camera. Figure 1 At the crystal scintillator, each photon of gamma radiation leads to the emission of one visible light photon. Describe how the current produced by the photocathode is amplified in the photomultiplier tube. [3 marks] Question 1 continues on the next page 4 *04* IB/M/Jun21/7408/3BB Do not write outside the box 0 1 . 4 Iodine-131 is a medical tracer that can be detected using a gamma camera. Iodine-131 has a physical half-life of 8.0 days. A patient is injected with iodine-131 that has an initial activity of 3.2 GBq. For this patient, the biological half-life is 66 days. For safety reasons, the patient cannot be discharged from hospital until the activity due to the iodine in the patient’s body drops to 1.1 GBq. Determine whether the patient can be safely released from hospital after 10 days. [4 marks] 15 5 *05* Turn over ► IB/M/Jun21/7408/3BB Do not write outside the box 0 2 Figure 2 shows scanned images of three different human heads. Each image used one of the following scanning techniques: • magnetic resonance (MR) • CT • ultrasound • PET. Figure 2 A B C Identify the scanning technique used for each image. Go on to explain how the features of each image enabled you to identify the type of scan. [4 marks] A: Scanning technique Explanation B: Scanning technique [Show More]

Last updated: 1 year ago

Preview 1 out of 30 pages

Reviews( 0 )

Recommended For You

 Physics> QUESTIONS & ANSWERS > A-level PHYSICS 7408/2 Paper 2 Question Paper + Mark scheme (Merged) Grade A+ (All)

preview
A-level PHYSICS 7408/2 Paper 2 Question Paper + Mark scheme (Merged) Grade A+

AQA A-level PHYSICS 7408/2 Paper 2 Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final *JUN217408201* IB/M/Jun21/E7 7408/2 For Examiner’s Use Question Mark 1 2 3 4 5 6...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$12

 Physics> QUESTIONS & ANSWERS > AQA A-level PHYSICS 7408/1 Paper 1 Question Paper + Mark scheme (Merged) Grade A+ (All)

preview
AQA A-level PHYSICS 7408/1 Paper 1 Question Paper + Mark scheme (Merged) Grade A+

AQA A-level PHYSICS 7408/1 Paper 1 Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final *JUN217408101* IB/M/Jun21/E8 7408/1 For Examiner’s Use Question Mark 1 2 3 4 5 6...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$12

 Physics> QUESTIONS & ANSWERS > AQA A-level PHYSICS 7408/3BA Paper 3 Section B Astrophysics Question Paper + Mark scheme (Merged) Grade A+ (All)

preview
AQA A-level PHYSICS 7408/3BA Paper 3 Section B Astrophysics Question Paper + Mark scheme (Merged) Grade A+

AQA A-level PHYSICS 7408/3BA Paper 3 Section B Astrophysics Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final *JUN2174083ba01* IB/M/Jun21/E8 7408/3BA For Examiner’s Use Ques...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$12

 Physics> QUESTIONS & ANSWERS > AQA A-level PHYSICS 7408/3A Paper 3 Section A Question Paper + Mark scheme (Merged) Grade A+ (All)

preview
AQA A-level PHYSICS 7408/3A Paper 3 Section A Question Paper + Mark scheme (Merged) Grade A+

AQA A-level PHYSICS 7408/3A Paper 3 Section A Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final *JUN2174083A01* IB/M/Jun21/E8 7408/3A For Examiner’s Use Question Mark 1 2...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$11.5

 Physics> QUESTIONS & ANSWERS > AQA AS PHYSICS 7407/2 Paper 2 Question Paper + Mark scheme (Merged) GRADE A+ (All)

preview
AQA AS PHYSICS 7407/2 Paper 2 Question Paper + Mark scheme (Merged) GRADE A+

AQA AS PHYSICS 7407/2 Paper 2 Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final *JUN217407201* IB/M/Jun21/E7 7407/2 For Examiner’s Use Question Mark 1 2 3 4 5 6–35 T...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$11

 Physics> QUESTIONS & ANSWERS > AQA AS PHYSICS 7407/1 Paper 1 Question Paper + Mark scheme (Merged) GRADE A+ (All)

preview
AQA AS PHYSICS 7407/1 Paper 1 Question Paper + Mark scheme (Merged) GRADE A+

AQA AS PHYSICS 7407/1 Paper 1 Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final *jun217407101* IB/M/Jun21/E7 7407/1 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 T...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$12

 Mathematics> QUESTIONS & ANSWERS > AQA AS MATHEMATICS 7356/2 Paper 2 Question Paper + Mark scheme (Merged) GRADE A+ (All)

preview
AQA AS MATHEMATICS 7356/2 Paper 2 Question Paper + Mark scheme (Merged) GRADE A+

AQA AS MATHEMATICS 7356/2 Paper 2 Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final 7356/2 PB/Jun21/E5 (JUN217356201) AS MATHEMATICS Paper 2 Time allowed: 1 hour 30 minutes...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$12

 Mathematics> QUESTIONS & ANSWERS > AQA AS MATHEMATICS 7356/1 Paper 1 Question Paper + Mark scheme (Merged) GRADE A+ (All)

preview
AQA AS MATHEMATICS 7356/1 Paper 1 Question Paper + Mark scheme (Merged) GRADE A+

AQA AS MATHEMATICS 7356/1 Paper 1 Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final 7356/1 PB/Jun21/E6 (JUN217356101) AS MATHEMATICS Paper 1 Time allowed: 1 hour 30 minutes...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$12

 Physics> QUESTIONS & ANSWERS > AQA A-level MATHEMATICS 7357/3 Paper 3 Question Paper + Mark scheme (Merged) GRADE A+ (All)

preview
AQA A-level MATHEMATICS 7357/3 Paper 3 Question Paper + Mark scheme (Merged) GRADE A+

AQA A-level MATHEMATICS 7357/3 Paper 3 Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final 7357/3 PB/Jun21/E5 (JUN217357301) A-level MATHEMATICS Paper 3 Time allowed: 2 hours...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$12

 Mathematics> QUESTIONS & ANSWERS > AQA A-level MATHEMATICS 7357/2 Paper 2 Question Paper + Mark scheme (Merged) GRADE A+ (All)

preview
AQA A-level MATHEMATICS 7357/2 Paper 2 Question Paper + Mark scheme (Merged) GRADE A+

AQA A-level MATHEMATICS 7357/2 Paper 2 Question Paper + Mark scheme (Merged) June 2021 Version: 1.0 Final 7357/2 PB/Jun21/E6 (JUN217357201) A-level MATHEMATICS Paper 2 Time allowed: 2 hours...

By TestGuider Of All Time , Uploaded: Dec 11, 2022

$11.5

$12.00

Add to cart

Instant download

Can't find what you want? Try our AI powered Search

OR

GET ASSIGNMENT HELP
26
0

Document information


Connected school, study & course



About the document


Uploaded On

Dec 11, 2022

Number of pages

30

Written in

Seller


seller-icon
TestGuider Of All Time

Member since 1 year

1 Documents Sold


Additional information

This document has been written for:

Uploaded

Dec 11, 2022

Downloads

 0

Views

 26

Document Keyword Tags

THE BEST STUDY GUIDES

Avoid resits and achieve higher grades with the best study guides, textbook notes, and class notes written by your fellow students

custom preview

Avoid examination resits

Your fellow students know the appropriate material to use to deliver high quality content. With this great service and assistance from fellow students, you can become well prepared and avoid having to resits exams.

custom preview

Get the best grades

Your fellow student knows the best materials to research on and use. This guarantee you the best grades in your examination. Your fellow students use high quality materials, textbooks and notes to ensure high quality

custom preview

Earn from your notes

Get paid by selling your notes and study materials to other students. Earn alot of cash and help other students in study by providing them with appropriate and high quality study materials.


$12.00

WHAT STUDENTS SAY ABOUT US


What is Browsegrades

In Browsegrades, a student can earn by offering help to other student. Students can help other students with materials by upploading their notes and earn money.

We are here to help

We're available through e-mail, Twitter, Facebook, and live chat.
 FAQ
 Questions? Leave a message!

Follow us on
 Twitter

Copyright © Browsegrades · High quality services·