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Q1— Section header —
1.1Indicate whether the following statements are TRUE or FALSE by writing only 'True' or 'False' next to the question number (1.1.1
1.1.5\ in the ANSWER BOOK.
1.1.1The u niversal gas law is represented as PV = mRT
1.1.2Latent heat is the amount of heat required to raise the temperature of a substance by one degree per unit mass
1.1.3One part of green light and one part of red light will produce yellow light
1.1.4Radiation is the way in which heat from the sun reaches the earth
1.1.5
1.2Define the following
1.2.1Candela (3\
1.2.2(3\
1.2.3Short sighted person (2\
1.2.4Sur face tension (3\
1.2.5Adhesive force (2\
1.3Provide ONE suitable example of each of the following
1.3.1Sound that resonance in closed tube
1.3.2Total reflection of light that cause lig ht to turn through 180
1.3.3
1.4Name ONE use of each of the following
1.4.1Wattmeter
1.4.225
Q2— Section header —
2.1Differentiate between transverse wave and longitudinal wave. (2\
2.2Briefly explain what will happen during the formation of an image through lenses the object is closer than the focal point (F\
2.3the following results were obtained Volume in m
0.8Pressure in KPa 20
2.3.1Write down the possible values of A and B. (2\
2.3.2Give Boyle's law in words. (3\
2.3.3Draw a graph to describe Boyle's law. (3\
2.4Study the diagram below and answer the question
2.4.1Give suitable name for th diagram (1\
2.4.2Name the la bel led parts by writing only the answer next to the letter (A J\ in the ANSWER BOOK. (10\ [25]25
Q3— Section header —
3.14 m of a gas at a pressure of 3.3 KPa and 27 C is compressed adiabatically in accordance with the formula P.V
1.25= Constant until the pressure is 6 KPa. Calculate the following
3.1.1New volume of the gas (3\
3.1.2Mass of the gas if the gas constant R = 0,187 KJ/Kg. K (2\
3.1.3Density of the gas (2\
3.2Name FOUR factors that will make galvanometer more sensitive (4\
3.3Calculate the frequency of the fundamental tone as well as the first overtone of an open tube at 30 C if the
3.4An object is placed at a distance of 400 mm from a concave mirror with a focal length of 200 m. Determine the following
3.4.1Position of the image (2\
3.4.2Nature of the image (2\
3.4.3The size of the image formed if the height of the object is 50 mm (3\ [25]25
Q4— Section header —
4.1Find the secondary voltage on a 240 V transformer which draws a current of A from the source and produce 12 A in the secondary coil. (3\
4.2liquid exerts osmotic pressure of 1.85 KPa and rises 160 mm in a funnel. Calculate the density of the liquid. (3\
4.3Name THREE factors which influence an induced emf coil. Assume that the emf is caused by pushing a bar magnet into the coil. (3\
4.4
4.5List FOUR factors that influence the rate of diffusion (4\
4.6
4.6.1The volume of the water to be heated (3\
4.6.2Energy required to raise the temperature of the water (3\
4.6.3Time taken required by the panel to heat up the water (3\ [25] TOTAL: 100 1507011525