K.C.S.E Physics Q & A - MODEL 1995PP2QN06
State the condition for a minim to occur in an interference pattern
0 Comments
K.C.S.E Physics Q & A - MODEL 1995PP2QN06
Describe how a young's double slit may be made in a laboratory
K.N.E.C MARKING SCHEME
K.C.S.E Physics Q & A - MODEL 1995PP2QN06
Distinguish between stationary and progressive waves
K.N.E.C ANSWERS
Progressive wave- Wave profile moves along with the speed of the wave
Stationary wave – wave profile appears static Progressive wave – Phase of points adjacent to each other is different Stationary wave – All points between successive node vibrate in phase Progressive wave – Energy translation in the direction of the wave travels Stationary wave- No translation of energy but energy associated in the wave K.C.S.E Physics Q & A - MODEL 1995PP2QN05
(a) (i) State the law of electromagnetic induction
(ii) Describe an experiment to demonstrate Faraday's law (b) (i) A researcher studying the behaviour of step- up transformer made the following observations: More joules per coulomb and fewer coulombs per second at the output than at the input terminals Explain why the observation does not imply a violation of the principle of conservation of energy (ii) A transformer of 480 turns in the primary coil is used to connect a 9 volt a.c electric device to a 240 v.a.c mains power supply. Calculate the number of turns in the secondary coil.
ANSWERS
​. (a) (i) The magnitude of the induced e.m.f is directly proportional to the rate at which the conductor cuts the magnetic field lines
The induced current flows in such a direction as to oppose the changes producing it. (ii) Plugging a magnetic into a coil
Make power constant VU = Joules current = charge / time Count P = IV For large V, 1 must lower for power input to be equal to power output
K.C.S.E Physics Q & A - MODEL 1995PP2QN04
Draw a ray diagram to show how a convex lens works as a magnifying glassK.C.S.E Physics Q & A - MODEL 1995PP2QN04
The diagram in figure 3 shows a certain eye defect
​(i) Name the object
(ii) Draw on the same diagram an arrangement to correct the defect (c) (i) Explain why a pail of water can be swung in vertical circle without the water pouring out (ii) A car of mass 1200kg is moving with a velocity of 25ms-1 around a flat bend of radius 150m. Determine the minimum frictional force between the tyres and the road that will prevent the car from sliding off. K.C.S.E Physics Q & A - MODEL 1995PP2QN03
(a) An object O is placed in front of convex mirror as shown in figure 2
(i) Draw to scale a ray diagram to show the position of the image
(ii) Determine the magnification (b) An object placed in front of a convex lens of focal length 10 cm produces an image at a distance of 15 cm from the lens and on the same sides as the object Determine the position of the object K.C.S.E Physics Q & A - MODEL 1995PP2QN02
Study the circuit diagram in figure 1 and answer the following questions
(a) Calculate the effective resistance between Y and Z(5.0 x 10-6 m2)
|
CATEGORIES
Categories
All
Topics
FORM I - PHYSICS SYLLABUSFORM II - PHYSICS SYLLABUSTOPICS
FORM III - PHYSICS SYLLABUSFORM IV - PHYSICS SYLLABUSARCHIVES
RSS FEEDS
AUTHOR
M.A NyamotiMy passion is to see students pass using right methods and locally available resources. My emphasis is STEM courses
|
We Would Love to Have You Visit Soon! |
Hours24 HR Service
|
Telephone0728 450425
|
|
8-4-4 materialsLevels
Subjects
|
cbc materialsE.C.D.E
Lower Primary
Upper Primary
Lower Secondary
Upper Secondary
|
teacher support
Other Blogs
|