MENU
Educational Resources
Exam Papers
Form 1 Videos
Form 2 Videos
Form 3 Videos
Form 4 Videos
Grade 4 Videos
Grade 5 Videos
Grade 6 Videos
Grade 7 Videos
Class 8 Videos
Form 1 Exams
Form 2 Exams
Form 3 Exams
Form 4 Exams
KCSE Videos
Class 8 Exams
Grade 5 Exams
Grade 4 Exams
Grade 3 Exams
Grade 2 Exams
Grade 1 Exams
Online Tests
Online Tuition
Sign In
Join
Get access to thousands of educational resources
Get premium membership
and access revision papers with marking schemes, video lessons and live classes.
OR
Processing. Please wait.
Form 4 Physics X-Rays Questions and Answers
State the factor that determines the hardness of the X-rays produced in an X-ray tube.
(2m 26s)
1466 Views
SHARE
|
« Previous
Next »
1.
Name the metal used to shield X-rays operators from the radiation. Give a reason why it is used.
2.
State one industrial use of X-rays.
3.
State the energy transformation when fast moving electrons are suddenly stopped by a target in an X-ray tube.
4.
State and explain the effect of increasing the E.H.T in an X-ray tube on the X-rays produced.
5.
State the factor that determines the hardness of the X-rays produced in an X-ray tube.
6.
State the property of X-rays, which makes it possible to detect cracks in bones.
7.
Give a reason why the target in an X-ray tube is made of tungsten or molybdenum.
8.
The target of X-ray tube is made of metals of high melting point. Give a reason for this.
9.
State with a reason the effect of the X-rays produced in an X-ray tube, when the p.d across the tube is increased.
10.
In an x-ray tube it is observed that the intensity of X-rays increases when potential difference across the filament is increased. Explain this observation.
11.
An X-ray tube produces soft x-rays. State the adjustments that may be made so that the tube produces hard X-rays.
12.
Figure 18 shows parts of an X-ray tube. a) Explain why: i. A potential difference is applied to the filament. ii. A high potential difference is applied between a cathode and the anode iii. Most of the tube is surrounded by lead. b) State how the resulting X-rays are affected by increasing the potential difference between the anode and the cathode.
13.
Figure 5 shows a narrow beam of X-rays passing between two metal plates in air. The plates are connected in series with a switch, a cell and a milliammeter. It is observed that when the switch is closed a current flows in the milliammeter. Explain this observation
14.
The anode of an X-ray tube becomes hot when the tube is in use. State the reason for this.
15.
State how the intensity of X-rays in an X-ray tube can be increased.
16.
State one difference between hard and soft X-rays.
×
Share Content Via:
Facebook
Twitter
WhatsApp
Close
Get premium membership