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.