Post-UTME Physics 2011 Objective — Question 8
Question 8 of 10 from the Post-UTME Screening (Post-UTME) Physics 2011 Objective paper, with the correct answer and a full explanation.
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A trough 12.0cm deep is filled with water of refractive index 4/3. By how much would a coin at the bottom of the trough appear to be displaced when viewed vertically from above the water surface?
- A. 3.0cmCorrect
- B. 6.0cm
- C. 9.0cm
- D. 16.0cm
Explanation
Apparent depth=real depth/n=12/(4/3)=9cm. Displacement=12-9=3cm.
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