Question on: JAMB Physics - 2019
A microscope is focused on a mark on a table, when the mark is covered by a plate of glass 2m thick, the microscope has to be raised 0.67cm for the mark to be once more in focus. Calculate the refractive index.
A
1.52
B
1.68
C
2.58
D
1.82
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Correct Option: A
R = th = 2cm, d = 0.67cm
| n | = | R
A | = | R
R.d | = | 2
2-0.67 | = | 1.52 |
n = 1.52
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