Question on: JAMB Physics - 1998
The displacement d produced in a glass block of thickness t and refractive index n when an object is viewed through it is
A
t – n
B
t (1 + 1/n)
C
t (1-1/n)
D
t (1/n - 1)
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Correct Option: C
n = (\frac {\text{real depth}}{\text {apparent depth}{}})
n = (\frac {t}{t-d})
(\frac{t - d}{1}) = (\frac{t}{n})
-d = (\frac{t}{n}) - t
d = - (\frac{t}{n}) + t
d = t - (\frac{t}{n})
d =t (1 - (\frac{1}{n}))
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