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When a ray of light travels from medium ...

When a ray of light travels from medium A to medium B , its speed increases from ` 2 xx 10^(8) ` m/s to `2.4xx10^(8)` m/s . What is the sine of the critical angle for the two media ?

A

`(6)/(5)`

B

` (5)/(6)`

C

`(3)/(4)`

D

`(4)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
The ray travels from medium A to medium B and `(V_(A))/(V_(B)) = (2 xx 10^(8))/(2.4 xx 10^(8)) = (5)/(6)` i.e., it is travelling from a denser medium to a rarer medium .
`therefore ` The sine of the critical angle (C) for the two media is given by `sin C = (5)/(6)`,
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