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4 answers

v =c/n

where v velocity of light in a given medium

c = 300000km/s

n = refrative index

so here v = 300000/(4/3) = 225000 km/s (water is the medium)

2007-02-24 00:40:39 · answer #1 · answered by maussy 7 · 0 0

speed of light will be = 3/4*300000 km/s
= 225000 km/s

2007-02-25 18:44:42 · answer #2 · answered by Anonymous · 0 0

refractive index=4/3
vel.of light in air=300000km/sec
vel.of light in medium=?
so
refractive index=vel.of light in air/vel.of light in medium
4/3=300000/vel.of light in medium
vel.of light in medium=300000*3/4
vel.of light in medium=225000km/sec

2007-02-24 02:07:19 · answer #3 · answered by Anonymous · 0 0

n=v/c therefore the ans given by two is rt

2007-02-24 23:42:43 · answer #4 · answered by IYER S 2 · 0 0

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