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1
answer
State Lenz’s a law of electromagnetic induction.
asked
Jul 8, 2021
in
Physics Form 4
by
anonymous
electromagnetic induction
0
votes
1
answer
An object is placed 40cm in front of a concave lens of focal length 20cm; determine the position of the image.
asked
Jul 8, 2021
in
Physics Form 4
by
anonymous
thin lenses
0
votes
1
answer
The diagram below shows a certain defect of vision. Name the defect.
asked
Jul 8, 2021
in
Physics Form 1
by
anonymous
rectilinear propagation of light and reflection at planes
0
votes
1
answer
What do you understand by the term accommodation?
asked
Jul 8, 2021
in
Physics Form 1
by
anonymous
rectilinear propagation of light and reflection at planes
0
votes
1
answer
The critical angle of a certain material medium is 43.2º. Determine the refractive index of the material.
asked
Jul 8, 2021
in
Physics Form 1
by
anonymous
rectilinear propagation of light and reflection at planes
0
votes
1
answer
Define refractive index.
asked
Jul 8, 2021
in
Physics Form 1
by
anonymous
rectilinear propagation of light and reflection at planes
0
votes
1
answer
You are given three resistors of values 5Ω, 8Ω and 12Ω. Show in a circuit diagram how you would connect them so as to give:
asked
Jul 8, 2021
in
Physics Form 4
by
anonymous
electricity
0
votes
1
answer
A current-carrying conductor AB is in a magnetic field as shown in the figure below.
asked
Jul 8, 2021
in
Physics Form 2
by
anonymous
magnetism
0
votes
2
answers
State how polarization is minimized in a simple cell.
asked
Jul 8, 2021
in
Physics Form 1
by
anonymous
simple cells and circuits
0
votes
1
answer
What do you understand by polarization as used in a simple cell?
asked
Jul 7, 2021
in
Physics Form 1
by
anonymous
simple cells and circuits
0
votes
1
answer
A girl standing at a distance claps her hands and hears an echo from a tall building 2 seconds later. If the speed of sound in air is 340m/s, determine how far the building is.
asked
Jul 7, 2021
in
Physics Form 3
by
anonymous
linear motion
0
votes
1
answer
The figure below shows a block diagram of a p-n junction diode.
asked
Jul 7, 2021
in
Physics Form 4
by
anonymous
electronics
0
votes
1
answer
Arrange the following radiations in order of increasing wavelengths. Infrared, blue light, ultraviolet, radiowaves, x-rays.
asked
Jul 7, 2021
in
Physics Form 4
by
anonymous
radioactivity
0
votes
1
answer
An object O is placed in front of a concave mirror and on the principal axis, as shown in the figure below. Complete the light ray diagram to locate the position of the image.
asked
Jul 7, 2021
in
Physics Form 1
by
anonymous
reflections
rectilinear propagation of light and reflection at planes
0
votes
1
answer
The figure below shows two waveforms representing the same wave motion.
asked
Jul 7, 2021
in
Physics Form 3
by
anonymous
waves
0
votes
1
answer
A small chain is often seen hanging at the back of a petrol carrying lorry. State and explain its significance.
asked
Jul 7, 2021
in
Physics Form 1
by
anonymous
electrostatic charging of objects by rubbing
0
votes
1
answer
A steel is to be magnetized by electrical method as shown below. Identify the pole P and Q of the resulting magnet.
asked
Jul 7, 2021
in
Physics Form 2
by
anonymous
magnetism
0
votes
1
answer
The figure below shows a ray of light incident on the surface of one plane mirror.
asked
Jul 7, 2021
in
Physics Form 1
by
anonymous
rectilinear propagation of light and reflection at planes
0
votes
1
answer
State two conditions under which a pinhole camera may form an image on its screen which has the same size as the object.
asked
Jul 7, 2021
in
Physics Form 1
by
anonymous
rectilinear propagation of light and reflection at planes
0
votes
1
answer
A stone is whirled in a vertical circle as shown in the figure below using a string of length 40 cm. A, B, C and D are various positions of the stone in its motion. The stone makes 2 revolutions per second and has a mass of 100g.
asked
Jul 7, 2021
in
Physics Form 4
by
anonymous
uniform circular motion
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