1. Fix the 100g mass marked P at B, the 80 cm mark of the uniform metre rule, using an adhesive.
2. Suspend another 100g mass marked Q at A, a distance V = 10.Ocm from the 0 cm mark of the metre rule.
3. Balance the whole arrangement horizontally on a knife edge as shown in the diagram above.
4. Measure and record the distance U of K from the 0 cm mark of the metre rule.
5. Repeat the procedure for five other values of V = 15.0, 20.0, 25.0, 30.0 and 35.0 cm
6. In each case, measure and record the Corresponding values of U. Tabulate your readings.
7. Plot a graph of U on the vertical axis against V on the horizontal axis.
8. determine the:
   (1) slope, s, of the graph
   (2) intercept c, on the vertical axis.
9. Evaluate (i) K\(_{1}\) =\(\frac{(1 - 2s)}{s}\) 100:
                 (ii) K\(_{2}\) = \(\frac{2c}{s}\) - 160
10. State two precautions taken to ensure an accurate result

(b)i. State two conditions under which a rigid body at rest remains in equilibrium when acted upon by three non-parallel coplanar forces.

ii. Explain how the position of the centre or gravity of a body affects the equilibrium of the body.

Using the diagram as a out the guide carry out the following instructions:

1. Place the pin O horizontally inside the cylinder provided. Pour some water on the pin in the cylinder such that the length of the water column / = SO = 10.0cm, where S place the represents the water meniscus.
2. lnsert another pin, P in the cork held by the boss of the retort stand.
3. Adjust the position of P vertically upward or 0 formed by refraction at S.
4. Read and record the distance h = PO.
5. Repeat the procedure for four other values of 1= 15, 20, 25, and 30cm.
6. In each case measure and record the corresponding value of h. Tabulate your readings.
7. Plot a graph of h on the vertical axis against l on the horizontal axis.
8. Determine the slope, s, of the graph
9. Evaluate (i) K\(_{1}\) = 1 - S
                 (ii) K\(_{2}\) = \(\frac{1}{k}\)
10. State two precautions taken to ensure accurate results.

(b)i. Explain the total internal reflection of light.

ii. A rectangular glass prism of thickness 6 cm and refractive index 1.5 is placed on the page of a book. The prints on the book are viewed vertically down Determine the apparent upward displacement of the print.

You are provided with two wires marked P and C. a resistor R\(_{s}\) = 1\(\Omega\) and other necessary apparatus.

1. Connect R\(_{s}\) in the left-hand gap of the metre bridge, a length L= 100cm of wire P in the right-hand gap and the other apparatus as shown in the diagram: above
2. Determine the balance point B on the bridge wire AC
3. Measure and record AB =/s, and BC = /
4. Evaluate R\(_{1}\) = (\(\frac{|_{p}}{|_{s}}\))Rs
5. Repeat the procedure for four other values of L = 90, 80, 70 and 60cm. In each case obtain and record the value of |\(_{s}\) and |\(_{p}\) and evaluate R\(_{1}\) = (\(\frac{|_{p}}{|_{s}}\))Rs
6. Repeat the experiment with the second wire, Q. Obtain the value of |\(_{s}\) and |\(_{Q}\) for equal lengths of wire as used in wire P.
7. Evaluate R\(_{1}\) = (\(\frac{|_{p}}{|_{s}}\))Rs. In each case, tabulate your readings.
8. Plot a graph of R\(_{2}\) on the Vertical axis against R\(_{1}\) on the horizontal axis.
9. Determine the slope S, of the graph.
10. Evaluate the k = \(\sqrt s\).
11. State two precautions taken to ensure accurate results.

(b)i. Define the resistivity of the material of a wire.

ii. A galvanometer with a full-scale-deflection of 1.5 x10\(^{3}\). A has a resistance of 50\(\Omega\). Determine the resistance required to convert it into a voltmeter reading up to 1.5V.