Advertisements
Advertisements
Question
A light ray enters from medium A to medium B as shown in the figure.
If the speed of light in medium A is `v_a` and in medium B is `v_b`, what is the refractive index of B with respect to A.
Solution
Speed of light in rarer medium A `(v_a)` is greater then the speed of light in denser medium B `(v_b) i.e., v_a> v_2`
Thus, refractive index of B relative to A,
`n_(BA) = ("Speed of light in Medium A" (v_a))/("Speed of light in Medium B" (v_b))`
`n_(BA) = v_a/v_b`
⇒ `n>1`
APPEARS IN
RELATED QUESTIONS
The refractive index of diamond is 2.42. What is the meaning of this statement?
Which of the following diagrams shows the ray of light refracted correctly?
Refractive indices of carbon disulphide and ethyl alcohol are 1.63 and 1.36 respectively. Which is optically denser?
How is the refractive index of a material related to the speed of light in it?
Give three examples of materials that refract light rays. What happens to the speed of light rays when they enter these materials?
What is meant by the refractive index of a substance?
Fill in the blank and Explain the completed sentences.
Refractive index depends on the ______ of light.
n = _______. This law is also called as Snell’s law.
If the refractive index of air with respect to glass is 2/3. What is the refractive index of glass with respect to air?
Refractive index of diamond with respect to glass is 1.6 and absolute refractive index of glass is 1.5. Find out the absolute refractive index of diamond.
