Refraction of the light through the Prism
Prism is a transparent three-dimensional solid shape in which the cross-section area of at least two opposite faces is the same. Let’s consider a triangular prism,a triangular prism has two bases of the same opposite triangular planes and three rectangular surfaces of the same cross-sectional area. Let’s take the top view of the prism, when a light ray falls on the surface of the prism, it bends towards the normal since light ray bends towards the normal when it passes from a rare medium to a denser medium, then light ray passes from glass to air, it bends away from the normal, what we observe here, there is the angle of deviation between an incoming ray from air to glass and the emerging ray glass to air. The incoming ray is split up into seven colors because the velocity is proportional to the wavelength, since light is made of 7 different wavelengths(i.e colors), the velocities of these colors differ from each other as soon as the light ray enters the prism. When light ray further passes from glass to air, these colors deviated more and we observe a pattern of 7 colors of the light in the decreasing order of their wavelengths ‘VIBGYOR’.
Let the light ray incident on one of the surfaces of the prism PQ obliquely,it bents to the normal MN, the incoming light ray forms an angle of incident ∠i_{1 }and refracted ray forms an angle of refraction ∠r_{1,}
this refracted ray incident on an opposite surface and forms an ∠i_{2}The refracted ray further travels from glass to air, in this situation the light ray bends away from the normal M’N’and forms an emergent angle. The angle of emergent( ∠e) is differed by the angle of the incident, this difference between the angle of incident and the angle of emergent is known as the angle of deviation∠D .
Dispersion of the light: Light rays pass from air to glass and split into seven colors because of the refraction of the light and the light is composed of seven colors, when the light ray enters the prism the velocity of all the colors changes, and it happens because the velocity of a wave is the product of frequency and the wavelength.7 colors of the light have different wavelengths due to which all colors move in the glass prism as per their velocity, therefore as the light ray enters the prism, these colors deviate individually then further while moving from glass to air these colors deviates more giving rise the phenomenon of dispersion ’VIBGYOR‘, the highest velocity is of red color which deviates least and lowest velocity is of violet color which deviates largest.
The experiment for showing the light is composed of 7 colors: If we place an inverted glass prism in front of an erected glass prism and allow the dispersed light to pass through the inverted glass prism. All the colors of the light deviate to a single point that results in the merge of all the colors into white color and thus emerging ray is white, it shows that light is made of seven colors.
Click for online shopping
Future Study Point.Deal: Cloths, Laptops, Computers, Mobiles, Shoes etc
Class 10 Physics Important Notes
What is the difference between virtual and real images?,
Image formation by Convex and Concave Mirrors,
Difference between Convex and Concave lenses,
Refraction of light through a glass slab.
Why does the Sun appear reddish in the evening and morning: Complete Detail
Reflection, Refraction, Dispersion, and Scattering
Image formation by Convex and Concave Lenses,
Human Eye – Structure and functions
Myopia, Hypermetropia, and Presbyopia
Electric Current and Heating effect of Electric Current
What is a potential difference across an electric field ?
Complete detail of electrical resistance and conductance
Class X Science Important notes of chapter 12-Magnetic effect of electric current-I
Class 10 Physics Viva Voce Questions for CBSE Board 2020-21
Buy Class 10 physics and chemistry notes-e-book at the price of Rs 50
Class 9 Physics Important Notes
What is the difference between Distance and Displacement
Difference between velocity and speed
Average Speed and Average velocity
Momentum: Definitions,units,formula and Uses in real life:Class 9 CBSE
The universal law of gravitational force
What is the difference between mass and weight
Thrust and Pressure : Difference
Archimedes Principle: Complete detail
What is the difference between Work,Energy and Power: Class 9 CBSE
CBSE IX Class Science Sample Papers
NCERT Solutions of Science and Maths for Class 9,10,11 and 12
NCERT Solutions for class 9 maths
NCERT Solutions for class 9 science
NCERT Solutions for class 10 maths
CBSE Class 10-Question paper of maths 2021 with solutions
CBSE Class 10-Half yearly question paper of maths 2020 with solutions
CBSE Class 10 -Question paper of maths 2020 with solutions
CBSE Class 10-Question paper of maths 2019 with solutions
NCERT Solutions for Class 10 Science
NCERT Solutions for class 11 maths
Chapter 1-Sets | Chapter 9-Sequences and Series |
Chapter 2- Relations and functions | Chapter 10- Straight Lines |
Chapter 3- Trigonometry | Chapter 11-Conic Sections |
Chapter 4-Principle of mathematical induction | Chapter 12-Introduction to three Dimensional Geometry |
Chapter 5-Complex numbers | Chapter 13- Limits and Derivatives |
Chapter 6- Linear Inequalities | Chapter 14-Mathematical Reasoning |
Chapter 7- Permutations and Combinations | Chapter 15- Statistics |
Chapter 8- Binomial Theorem | Chapter 16- Probability |
CBSE Class 11-Question paper of maths 2015
CBSE Class 11 – Second unit test of maths 2021 with solutions
NCERT solutions for class 12 maths
Chapter 1-Relations and Functions | Chapter 9-Differential Equations |
Chapter 2-Inverse Trigonometric Functions | Chapter 10-Vector Algebra |
Chapter 3-Matrices | Chapter 11 – Three Dimensional Geometry |
Chapter 4-Determinants | Chapter 12-Linear Programming |
Chapter 5- Continuity and Differentiability | Chapter 13-Probability |
Chapter 6- Application of Derivation | CBSE Class 12- Question paper of maths 2021 with solutions |
Chapter 7- Integrals | |
Chapter 8-Application of Integrals |
Class 12 Solutions of Maths Latest Sample Paper Published by CBSE for 2021-22 Term 2
Class 12 Maths Important Questions-Application of Integrals
Solutions of Class 12 Maths Question Paper of Preboard -2 Exam Term-2 CBSE Board 2021-22
Solutions of class 12 maths question paper 2021 preboard exam CBSE Solution