Question
Download Solution PDFThe refractive index of a given transparent medium is 1.5. What will be the speed of light in that medium?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 2 × 108m / sec.
Given:
Refractive index \(n=1.5\)
To find: Speed of light in the medium
Formula used:
The refractive index is defined as:
\(n={Speed-of-light-in-vaccum \over Speed-of-light -in-medium}\)
Calculations:
Here we have,
\(n={Speed-of-light-in-vaccum \over Speed-of-light -in-medium}\)
\(1.5={3*10^8 \over Speed-of-light -in-medium}\)
Speed of light in the medium is \(={3*10^8\over 1.5}=2*10^8m/sec\)
So, the speed of light in the medium is 2 × 108m / sec.
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