Question on: JAMB Physics - 1997
Light of velocity 3 x 108ms-1 is incident on a material of reflective of index n. If the velocity of light is reduced to 2.4 x 108ms-1 in the material, what is n?
A
2.33
B
2.25
C
1.33
D
1.25
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Correct Option: D
n = (\frac{3 \times\ 10^8}{2.4 \times\ 10^8})
n = 1.25
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