light travel with velocity 1.5 × 10^8 m/s in a medium its velocity becomes 0.5×^8 m/s . what is refractive index of second medium with respect to first.
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Let,
V1 = 1.5 × 10^8 m/s
V2 = 0.5 × 10^8 m/s
Refractive index of second medium w.r.t. one =
n21 = V1 / V2
n21 = 1.5 × 10^8 / 0.5 × 10^8
n21 = 3
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