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Physics Form 4 Questions and Answers
0
votes
1
answer
what is Eddy current
answered
Feb 9
in
Physics Form 4
by
anony mous
electromagnetic induction
eddy currents
0
votes
2
answers
draw diagram to show how the eye of a person sees the image
answered
Jan 7
in
Physics Form 4
by
0762147XXX
thin lenses
0
votes
1
answer
Why is the moon said to be accelerating when revolving round the earth at a Constant speed?
answered
Nov 15, 2022
in
Physics Form 4
by
0715551XXX
uniform circular motion
0
votes
0
answers
Differences between CRT and CRO
asked
Mar 23, 2022
in
Physics Form 4
by
Lukulu
cathode rays and cathode ray tube
crt
0
votes
0
answers
distinguish between linear velocity and angular velocity
asked
Mar 5, 2022
in
Physics Form 4
by
boazk
uniform circular motion
0
votes
0
answers
how to measure the quantity of ×-rays
asked
Feb 8, 2022
in
Physics Form 4
by
dogolemo
x-rays
0
votes
2
answers
X-rays are used for detecting cracks inside metal beams.
answered
Dec 25, 2021
in
Physics Form 4
by
RomeldYohan
radioactivity
0
votes
1
answer
Define nuclear fission
answered
Dec 7, 2021
in
Physics Form 4
by
easyadmin
radioactivity
0
votes
0
answers
a girl whirls a stone of mass 0.5kg in a vertical circle on the end of a string 40cm long.at the lowest point of the circle of the circle, the velocity of the stone is 3m/s.calculate the tension on the string at this point?
asked
Oct 7, 2021
in
Physics Form 4
by
salmonkajua
uniform circular motion
0
votes
1
answer
How much current is taken by a bulb whose rate is 100Ω and which is designed for mains supply of 240V?
answered
Aug 20, 2021
in
Physics Form 4
by
majendadmin
electronics
0
votes
1
answer
In a certain x-ray tube, the electrons are accelerated by a pd of 12000V. Assuming all the energy goes to produce x-rays, determine the frequency of the x-rays produced. (Planks constant h = 6.62 ×10-34 J and charge of an electron, e = 1.6 ×10-19 C)
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
radioactivity
0
votes
1
answer
What property of lead makes it suitable for use as shielding material?
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
radioactivity
0
votes
1
answer
Figure 4 shows the features of an x-rays tube.
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
radioactivity
0
votes
1
answer
The function of the capacitor is to eliminate sparking at the contacts. State why sparking occurs at the contacts.
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
electromagnetic induction
0
votes
1
answer
The figure below shows an induction coil used to step-up voltage.
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
electromagnetic induction
0
votes
1
answer
Arrange the following electromagnetic waves in order of their increasing wavelength. X-rays, gamma rays, ultra violet, visible light, infrared and microwaves.
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
radioactivity
0
votes
1
answer
What is biasing?
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
electronics
0
votes
1
answer
Using a diagram, explain how doping produces a p-type semi-conductor.
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
electronics
0
votes
1
answer
The figure below shows features of a diffusion cloud chamber used for detecting radiations from a radioactive source.
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
radioactivity
0
votes
1
answer
A radioactive isotope showed a count rate of 82 counts per second initially. After a time of 210 seconds, the count rate dropped to 19 counts per second. The average background countremained constant at 10 counts per second. What is the half-life of the material?
answered
Aug 18, 2021
in
Physics Form 4
by
anonymous
radioactivity
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