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Lubov Fominskaja [6]
3 years ago
9

40

Physics
1 answer:
insens350 [35]3 years ago
4 0

Answer:

774.8 secs

Explanation:

distance(d)= speed(v)* time(t)

calculate speed:

refractive index = speed of light (c)/ speed of light in medium (v)

1.56 = 3*10^8*v

v=192307692.3 m/s

d = v *t

t = d/v

on substituting values:

t = 774.8 secs

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