20 solutions available
Question 1(d)(i) Why is the ratio of the velocities of light of wavelengths 4000 Å and 8000 Å in vacuum 1 : 1 ?(ii) Which of the above wavelengths...
Question 1(e)(i) Why is the motion of a body moving with a constant speed around a circular path said to be accelerated? [2](ii) Name the unit of...
Question 2(c)(i) State the relation between the critical angle and the absolute refractive index of a medium.(ii) Which colour of light has a higher...
Question 3(c)(i) What do you understand by the term nuclear fusion? [2](ii) Nuclear power plants use the nuclear fission reaction to produce...
Question 4(d)(i) What are isobars?(ii) Give one example of isobars. [2]
Question 4(e)State any two advantages of electromagnets over permanent magnets. [2]
Question 5(a)(i) Derive a relationship between S.I. and C.G.S. unit of work. [3](ii) A force acts on a body and displaces it by a distance S in a...
Question 5(b)A half metre rod is pivoted at the centre with two weights of 20 gf and 12 gf suspended at a perpendicular distance of 6 cm and 10 cm...
Question 5(c)(i) Draw a diagram to show a block and tackle pulley system having a velocity ratio of 3 marking the direction of load (L), effort (E)...
Question 6(c)An object is placed at a distance of 12 cm from a convex lens of focal length 8 cm. [4]Find:(i) the position of the image(ii) nature of...
Question 7(a)Draw the diagram of a right angled isosceles prism which is used to make an inverted image erect. [3]
Question 7(c)A person is standing at the sea shore. An observer on the ship which is anchored in between a vertical cliff and the person on the shore...
Question 8(a)(i) A fuse is rated 8A. Can it be used with an electrical appliance rated 5 KW, 200 V? Give a reason. [3](ii) Name two safety devices...
Question 8(b)(i) Find the equivalent resistance between A and B. [3](ii) State whether the resistivity of a wire changes with the change in the...
Question 8(c)An electric iron is rated 220V, 2 kW. [4](i) If the iron is used for 2h daily, find the cost of running it for one week if it costs...
Question 9(b)(i) State two differences between "Heat Capacity" and "Specific Heat Capacity". [3](ii) Give a mathematical relation between Heat...
Question 9(c)The temperature of 170 g of water at 50°C is lowered to 5°C by adding a certain amount of ice to it. Find the mass of ice added.Given:...
Question 10(a)The diagram shows a coil wound around a U shape soft iron bar AB. [3](i) What is the polarity induced at the ends A and B when the...
Question 10(b)The ore of Uranium found in nature contains 92238U_{92}^{238}\text{U}92238U and 92235U_{92}^{235}\text{U}92235U. Although both the...
Question 10(c)Radiations given out from a source when subjected to an electric field in a direction perpendicular to their path are shown in the...