(a) State two factors which affect the angle of deviation of a ray of light through a
triangular glass prism.
(b)Seven virtual images of an object are formed when two plane mirrors are inclined at
an angle 0 to each other. Calculate the value of 0
(c)By means of a ripple tank, a student was able to generate series of transverse waves
by varying the frequency ofthe dipper and all the waves so generated covered a
distance of 0.80 m in 0.2 s.
(i)Determine the speed, v, of the waves
(ii)Copy and complete the table given above in your answer booklet.
(iii)Plot a graph with f on the vertical axis and h^{ 1} on the horizontal axis.
(iv)What does the slope of the graph represent?
f(Hz) 
λ/m 
λ^{ 1} /m^{ 1} 
2.0 


4.0 


6.0 


8.0 


10.0 

