Question

Observe the following ray diagram and answer the questions given below:

1. Identify the instrument shown in the diagram.    (1)
2. What is the combined effect of two lenses?    (1)
3. Write the use of the above instrument.    (1)

Answer 1

1. Compound microscope.
2. The combined action of the two lenses produces higher magnification.
3. It is used to monitor blood corpuscles, plant and animal cells, as well as microbes such as bacteria.