Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

What is the difference between absolute refractive index of a medium and the relative refractive index of two mediums? What is the relation between them? 
Asked by manishapatel43387 | 25 Nov, 2021, 07:37: PM
answered-by-expert Expert Answer
Absolute refractive index: When the light is going from vacuum to another medium, then the value of refractive index is called the absolute refractive index.
 
Relative refractive index: When the light goes from one medium ( other than vacuum or air) to another medium then that refractive index is called relative refractive index. 
 
Note: Refractive index of vacuum or air is 1.  
 

The relative refractive index of medium 2 with respect to medium 1 is given as,

begin mathsize 12px style straight n subscript 21 equals fraction numerator Speed space of space light space in space medium space 1 over denominator Speed space of space light space in space medium space 2 end fraction end style = equals n subscript 2 over n subscript 1 equals v subscript 1 over v subscript 2

 

The absolute refractive index is given as,

begin mathsize 14px style straight n subscript straight m equals fraction numerator Speed space of space light space in space vacuum over denominator Speed space of space light space in space medium end fraction end style 

Relation between absolute refractive index and relative refractive index can be wrtitten as 

n subscript 21 equals n subscript 2 over n subscript 1 equals v subscript 1 over v subscript 2


Answered by Shiwani Sawant | 26 Nov, 2021, 01:50: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Physics
What is the difference between absolute refractive index of a medium and the relative refractive index of two mediums? What is the relation between them? 
Asked by manishapatel43387 | 25 Nov, 2021, 07:37: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
How does the lateral displacement of light ray vary? on what factors it depends? directly proportional or inversely?
Asked by Trisha Gupta | 22 Nov, 2021, 01:03: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
what is total internal reflection? Under what conditions does it take place.
Asked by burhanraja55 | 27 Oct, 2021, 03:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Question: A ray of light travelling in air falls on the surface of a transparent glass slab at an angle of 60° with the normal to the surface. Find the angle made by the refracted ray with the normal within the glass slab. Refractive index of the glass slab is square root of 2  .
Asked by Trisha Gupta | 21 Aug, 2021, 06:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
define the term dispersion of white light. name the colour of light which bends the most.
Asked by chalamsimaha | 15 Feb, 2021, 08:37: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
1.A student observes below phenomenon in the lab as a white light passes through a prism. Among many other colors, he observed the position of two colors: red and violet. (A)What is the phenomenon called? (B)What is the reason for violet light to bent more than the red light? (Ref to: image 1) 2 points Add File
Asked by jasminekhanna27 | 16 Oct, 2020, 11:36: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
explain. why angle of incidence= Angle of emergence ?
Asked by arindeep.singh | 23 Sep, 2020, 09:08: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Why light rays do not bend or refract when they meet the glass slab perpendicularly? (Pls ans theoratically and dont say it is bcs i is 0)
Asked by marygreata3 | 16 Aug, 2020, 07:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
please explain refraction through glass slab  
Asked by nehchalrs15 | 05 Aug, 2020, 10:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
explain why pool of water apper to be less dept then its actually is with diagram
Asked by jonysin042 | 11 Jun, 2020, 08:46: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×