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JAMB Physics 2013 Question 33

Question 33

Lenses and Optical Instruments

What does the diagram above represent?

Diagram for this question
  1. A.telescope in normal use.
  2. B.microscope in normal use.
  3. C.telescope in abnormal use.
  4. D.microscope in abnormal use.
Show the answer and explanation

Answer: B (microscope in normal use.)

Explanation

The object sits just beyond the focal point Fo of the objective, which forms a real, magnified image inside the focus of the eyepiece. The eyepiece then gives a large virtual image I2: a compound microscope used normally.