K.C.S.E Physics Q & A - MODEL 2013PP2QN10
​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 milliameter.
​It is observed that when the switch is closed a current flows in the milliameter. Explain this observation.
answer
0 Comments
K.C.S.E Physics Q & A - MODEL 2013PP2QN09
In domestic wiring systems lamps in the lighting circuit are required to be in parallel and not in series. State two reasons for this requirement.
answer
K.C.S.E Physics Q & A - MODEL 2013PP2QN08
​Figure 4 shows a simple transformer connected to a 12 V a.c. source and an a.c. voltmeter.
​By counting the number of turns in each coil, determine the reading on the voltmeter.
K.C.S.E Physics Q & A - MODEL 2013PP2QN07
​The equation below represents a nuclear reaction in which two deuterium nuclei fuse to form Helium and X.
​(a) Determine the values of a and b.
(b) Identify X.
answers
K.C.S.E Physics Q & A - MODEL 2013PP2QN06
Figure 3 shows a ray of light passing into a glass prism ABC.
Sketch the path of the ray as it travels from face AC. (critical angle for glass is 42o)K.C.S.E Physics Q & A - MODEL 2013PP2QN05
​Figure 2 shows the image of an object formed by reflection in a converging mirror. C is the centre of curvature of the mirror
​Complete the diagram to show:
(a) how incident rays are reflected to form the image; (b) the object position. K.C.S.E Physics Q & A - MODEL 2013PP2QN04
​Figure 1 shows a cell of e.m.f. 2 V connected in series with a resistor R and a switch S. Voltmeters V1 and V2 are connected across the cell and the resistor respectively.
​(a) State the reading of V1 with S open.
(b) With S closed, V1 reads 1.6 V. State the reading of V2.
answer
​(a) 2V
(b) 1.6V
K.C.S.E Physics Q & A - MODEL 2013PP2QN03
State the reason why the magnetic field strength of a magnet is greatest at the poles.
answer
K.C.S.E Physics Q & A - MODEL 2013PP2QN02
Explain why the image formed in a pin hole camera gets blurred when the hole is enlarged.
answer
K.C.S.E Physics Q & A - MODEL 2013PP2QN01State the reason why when a ray of light strikes a mirror at 900, the reflected ray travels along the same path as the incident ray.
answer
K.C.S.E Physics Q & A - MODEL 2013PP1QN13
​ A drop of blue ink is introduced at the bottom of a beaker containing water. It is observed that after some time, all the water in the beaker turns blue. Name the process that takes place.
answer
​K.C.S.E Physics Q & A - MODEL 2013PP1QN12
State why it is necessary to leave an air space in a closed glass bottle of water when it is to be kept in a refrigerator.
answer
K.C.S.E Physics Q & A - MODEL 2013PP1QN11
​ Figure 6 (a) and 6(b) show capillary tubes inserted in water and mercury respectively.
It is observed that in water the meniscus in the capillary tube is higher than the meniscus in the beaker, while in mercury the meniscus in the capillary tube is lower than the meniscus in the beaker. Explain these observations.
answer
K.C.S.E Physics Q & A - MODEL 2013PP1QN10
​Figure 5 shows a Bunsen burner.
​Explain how air is drawn into the burner when the gas tap is open.
answer
K.C.S.E Physics Q & A - MODEL 2013PP1QN09
Explain why brakes fail in a hydraulic braking system when air gets into the system.
answer
K.C.S.E Physics Q & A - MODEL 2013PP1QN08
Figure 4 shows a uniform metre rule of weight 1 N with two weights of 0.18 N and 0.12 N suspended from its ends.
​Determine how far from the 0.18 N weight a pivot should be placed in order to balance the meter rule.
K.C.S.E Physics Q & A - MODEL 2013PP1QN07
​Figure 3 shows a piece of wood fitted into a copper pipe and a piece of paper wrapped tightly around the junction.
​It is observed that when a flame is applied around the paper at the junction, the side of the paper around the wood burns first. Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2013PP1QN05
State two measurements you would take in an experiment to determine the upthrust of an object which is immersed in a fluid.
State how the measurements in question (5) are used to determine the upthrust of the object.
answer
5. Weight of object in air
Weight of object when fully immersed in fluids 6. Upthrust = weight in air - weight of object in fluid. K.C.S.E Physics Q & A - MODEL 2013PP1QN04
​An object of weight 20 N attached at the end of a spring causes an extension of 0.5 cm on the spring.
(a) Determine the spring constant of the spring. (b) Determine the weight of an object that would cause an extension of 0.86 cm when attached at the end of the same spring. K.C.S.E Physics Q & A - MODEL 2013PP1QN03
​Figure 2 shows some air trapped by mercury in a glass tube. The tube is inverted in a dish containing mercury.
​Given that the atmospheric pressure is 760 mmHg and the height of mercury column in the tube is 600 mm, determine the pressure of the air trapped in the tube in mmHg.
K.C.S.E Physics Q & A - MODEL 2013PP1QN02
State one factor that affects the turning effect of a force on a body.
answers
K.C.S.E Physics Q & A - MODEL 2013PP1QN01
Figure 1 shows part of the main scale and vernier scale of a vernier callipers.
​Record the reading indicated.
answer
K.C.S.E Physics Q & A - MODEL 2012PP2QN013
​Figure 11, shows an alternating current (a.c) connected across a diode D and a resistor R.
​On the axes provided sketch the output as observed in the CRO connected across R.
State why alternating current (a.c) is used for transmitting electricity over long distances21/7/2020
K.C.S.E Physics Q & A - MODEL 2012PP2QN012
State why alternating current (a.c) is used for transmitting electricity over long distances
answer
K.C.S.E Physics Q & A - MODEL 2012PP2QN11
​Figure 10, shows the cross section of a conductor held between two magnets and carrying a current out of the paper.
​Indicate with an arrow on the diagram the direction in which the conductor will move when it is released.
|
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
|