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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. - Science

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प्रश्न

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.

थोडक्यात उत्तर

उत्तर

Given:
Refractive Index of glass (ng) = 1.5

Refractive Index of diamond with respect to glass (ndg) = 1.6

Refractive index of diamond with respect to glass =

`("Refractive index of diamond"  ("n"_"d"))/("Refractive index of glass")`

`1.6 = "n"_"d"/1.5`

nd = 1.5 × 1.6

= 2.4

Hence, the absolute refractive index of diamond is 2.4.

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पाठ 10: Light – Reflection and Refraction - Short Answer Questions [पृष्ठ ८३]

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एनसीईआरटी एक्झांप्लर Science [English] Class 10
पाठ 10 Light – Reflection and Refraction
Short Answer Questions | Q 24. | पृष्ठ ८३

संबंधित प्रश्‍न

What is the unit of refractive index? 


Define Snell's law of refraction. A ray of light is incident on a glass slab at an angle of incidence of 60°. If the angle of refraction be 32.7°, calculate the refractive index of glass. (Given : sin 60° = 0.866, and sin 32.7° = 0.540).


The speed of light in vacuum and in two different glasses is given in the table below:  

Medium Speed of light
Vacuum 3.00 × 108 m/s
Flint glass 1.86 × 108 m/s
Crown glass 1.97 × 108 m/s


(a) Calculate the absolute refractive indexes of flint glass and crown glass.
(b) Calculate the relative refractive index for light going from crown glass to flint glass.


The refractive indices of four substance P, Q, R and S are 1.50, 1.36, 1.77 and 1.31 respectively. The speed of light is the maximum in the substance: 

(aP
(bQ
(cR
(d


The refractive index of water with respect to air is `4/3`. The refractive index of air with respect to water will be:

(a) 1.75
(b) 0.50
(c) 0.75
(d) 0.25


Fill in the blank and Explain the completed sentences.
 Refractive index depends on the ______ of light.


Mark the correct answer in the  question.

 If the refractive index of glass with respect to air is 3/2, what is the refractive index of air with respect to glass?


Light travels with a velocity 1.5 x 108 m/s in a medium. On entering second medium its velocity becomes 0.75 x 10 m/s. What is the refractive index of the second medium with respect to the first medium?


Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept ‘X’ inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged.

She measured the angles of incidence for both the rays on the left side of the box to be 48.60. She knew the refractive index of the material ‘X’ inside the box was 1.5. What will be the approximate value of angle of refraction?

(use the value: sin 48.6° ≈ 0.75)


How is the refractive index of material related to the velocity of light?


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