alarm
Ask a question
Chemistry
Sigizmund

Q. 4 If the absolute refractive index of one material is 3/4. What is the velocity the light in that material? And what will be the refractive index of another material with respect to first material when velocity of light in another material is 2.4 x 10^8 m/s ? 3 marks​

answers: 1
Register to add an answer
Answer:

Answer: Speed of light in medium first is 2.5 × 10^7 m/s and refractive index of another material with respect to first material is 0.1.

Explanation:

In a medium, say medium X, absolute refractive index = nX = 3/4

Velocity of light in vacuum = c = 3 × 10^8 m/s

We know,

n-m = c/v-m

So,

v = c/n = (3 × 10^8 m/s)/(3/4)

=> vX = 2.5 × 10^7 m/s

Now, let the second medium be Y.

It is knows to us that, vY = 2.4 × 10^8 m/s

Since n21 = v1/v2,

Therefore, n-YX = vX/vY = (2.5 × 10^7)/(2.4 × 10^8) = 5/48 ≈ 0.1.

More:

  • Principle of reversibility:

If it is given that the refractive index of medium 1 w.r.t. medium 2 is n. Then, refractive index of medium 2 w.r.t. medium 1 is inverse of that of medium 1 w.r.t. medium 2.

That is, n21 = 1/n12.

  • Finding refractive index of medium 3 w.r.t. medium 1:

If n21, n32 is given, then:

n31 = n21 × n32

  • n21 = n2/n1.
329
Panarin
For answers need to register.
10
cents
The time for answering the question is over
Contacts
mail@expertinstudy.com
Feedback
Expert in study
About us
For new users
For new experts
Terms and Conditions