Physics, asked by justinbaijuabraham, 5 months ago

1.) The refractive index of a certain substance is 1.5. Find the speed of light in this
medium. Given that the speed of light in air is 3 10 m/s.

Answers

Answered by trilakshitha
2

Answer:

we know that refractive index

n=

speedoflightinmedium

speedoflightinvacuum

where

c=

10

8

m/s

1.5=

v

c

v=

1.5

3×10

8

v= 2× 10

8

m/s

For critical angle we will use snell's law

C is critical angle

n

air

=

1

n

glass

sinC= n

air

sin90

sinC=

n

glass

1

=

1.5

1

C=41.8

o

Explanation:

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