A rectangular glass prism of thickness d and absolute refractive index n is placed on...
PHYSICS
WAEC 2007
A rectangular glass prism of thickness d and absolute refractive index n is placed on a point object which is viewed vertically downward from above the prism. Which of the following expressions correctly defines the apparent upward displacement of the object?
- A. \(\frac{d}{n}\)
- B. dn
- C. \(\frac{d}{n - 2}\)
- D. \(\frac{d(n - 1)}{n}\)
Correct Answer: A. \(\frac{d}{n}\)
Explanation
n = \(\frac{R.d}{A.d}\)
R.d = \(\frac{R.d}{n} = \frac{d}{n}\)
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