K.C.S.E Physics Q & A - MODEL 1997PP1QN12
Figure 6 shows a beam AB supported at points A and B. A large F is applied on the beam as shown. Mark on the diagram, the position X, where a notch is likely to appear.
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K.C.S.E Physics Q & A - MODEL 1997PP1QN11
Name a device used to convert light energy directly into electrical energy
answers
K.C.S.E Physics Q & A - MODEL 1997PP1QN11
Figure 5 shows two charged identical conduction spheres on insulting stands. Each cross represents a charge. The spheres are briefly brought into contact and then separated.
Sketch in the space provided the diagrams of the spheres showing charge distribution after separation
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K.C.S.E Physics Q & A - MODEL 1997PP1QN10
Figure 4 shows two point objects A, and B, placed in front of a mirror M
Sketch a ray diagram to show the positions of their images as seen by the eye.
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K.C.S.E Physics Q & A - MODEL 1997PP1QN09
Figure 3 shows two aluminium containers, A and B placed on a wooded table. A and B have equal volumes of hot water initially at the same temperature.
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K.C.S.E Physics Q & A - MODEL 1997PP1QN08
State the reason why water spilled on a glass surface wets the surface
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K.C.S.E Physics Q & A - MODEL 1997PP1QN07
Explain why a glass container with thick walls is more likely to crack than one with a thin wall when a very hot liquid is poured into them.
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K.C.S.E Physics Q & A - MODEL 1997PP1QN06The number of molecules in 18cm3 of a liquid is 6 x 1023. Assuming that the diameter of the molecules is equivalent to the side of a cube having the same volume as the molecule. Determine the diameter of the molecule.The height of the mercury column in a barometer at a place is 64cm. What would be the height of a column of paraffin in barometer at the same place? (Density of paraffin = 8.0 x 102 kgm-3)
K.C.S.E Physics Q & A - MODEL 1997PP1QN04
A butcher has a beam balance and masses 0.5 kg and 2kg. How would he measure 1.5 kg of meat on the balance at once?
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K.C.S.E Physics Q & A - MODEL 1997PP1QN03
Give a reason why the weight of the body varies from place to place
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K.C.S.E Physics Q & A - MODEL 1997PP1QN02
Figure 2 shows a rigid body acted upon by a set of forces. The magnitudes of the forces are as follow
F1 = 3N1, F2 = 6N, F3 = 3N, F4 = 4 N1, F5 = 3N and F6 = 3 N
​Identify the couple among these forces
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K.C.S.E Physics Q & A - MODEL 1997PP1QN01
Figure 1 shows a measuring cylinder, which contains water initially at level A. A solid of mass 11 g is immersed in the water, the level rises to
Determine the density of the solid. (Give your answer to 1 decimal place)
K.C.S.E Physics Q & A - MODEL 1996PP2QN07
(a) Describe with the aid of a diagram an experiment set up for observing photoelectric effect
(b) Table 2 shows the relationship between the wavelength, of a radiation falling on the surface and the energy, k of the emitted electrons
(i) Plot a graph of energy k ( y – axis) against the frequency, f, of the incident light
(ii) Determine the work function Φ of the surface used (Speed of light, c = 3.00 * 108 ms-1 planks constant h = 6.663 * 10-34JS)K.C.S.E Physics Q & A - MODEL 1996PP2QN06
(a) The fig. 4 shows the diagram of set up to investigate the variation of centripetal with the radius r, of the circle in which a body rotated
Describe how the set up can be used to carry out the investigation
Table 1 shows results obtained from an investigation similar to the one in part (a)
(i) Plot a graph of force, F ( y- axis) on the body against the radius , r, ( in meters) (ii) Given that the mass of the body is 100g, use the graph to determine the angular velocity, K.C.S.E Physics Q & A - MODEL 1996PP2QN05
(a) (i) What is the difference between longitudinal and transverse waves?
(ii) State two distinctions between the way sound waves and electromagnetic waves are transmitted (b) A mineworker stands between two vertical cliffs 400m from the nearest cliff. The cliffs are X distance apart. Every time he strikes the rock once, he hears two echoes, the first one after 2.5 s, while the second follows 2s later. From this information; calculation: (i) The speed of the sound in air (ii) The value of X (c) In an experiment to observe interference of light waves a double slit is placed close to the source. See figure
(i) State the function of the double slit
(ii) Describe what is observed on the screen (iii) State what is observed on the screen when I. The slit separation S1S2 is reduced II. White light source is used in place of monochromatic source
answers
(a) (i) Particles of the transmitting medium vibrate in the direction of the wave for a longitudinal wave, but at right angles for a transverse wave:Sound requires medium but no medium required for electromagnetic wave; speed of sound lower than that of electromagnetic wave;
(c) (i) Double slit provides coherent sources;
(ii) Dark and bright fringes; The central fringe is the brightest while the intensity of the other fringes reduces away from the central fringe; (iii) I. The separation of fringes increases II. Central fringe is white; fringes on either side are colored; K.C.S.E Physics Q & A - MODEL 1996PP2QN04(a) (i) Describe the experiment to determine the specific heat capacity C, of a block of aluminium with two holes drilled in it, to accommodate a thermometer and an electric immersion heater
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