Advertisement Remove all ads

The absolute refractive indices of two media 'A' and 'B' are 2.0 and 1.5 respectively. If the speed of light in medium 'B' is 2 × 10^8 m/s, calculate the speed of light in - Science

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads

The absolute refractive indices of two media 'A' and 'B' are 2.0 and 1.5 respectively. If the speed of light in medium 'B' is 2 × 108 m/s, calculate the speed of light in:

(i) vacuum,

(ii) medium 'A'.

Advertisement Remove all ads

Solution

Absolute refractive index of medium 'A', `mu_A=2.0`

Absolute refractive index of medium 'B', `mu_B=1.5`

(i) For medium 'B',

`1.5=c/((2xx10^8))`

`rArrc=2xx1.5xx10^8`

`rArrc=3xx10^8`

Speed of light in vacuum is ⇒v=cμA

⇒v=cμA.

(ii) For medium 'A',

`mu_A=c/v`

`rArrv=c/mu_A`

`rArrv=(3xx10^8)/2`

`rArrv=1.5xx10^8`

Thus, speed of light in medium 'A' is 1.5 x 108 m s-1.

Concept: Refractive Index
  Is there an error in this question or solution?
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×