CBSE Class 12 Physics Wave Optics Formula list: In this article, students of Class 12 with Physics as their core subject can find important formulas, definitions, and diagrams from Chapter 10, Wave Optics. It is yet another important chapter that deals with some of the most important topics from Class 12 Physics, Interference and Diffraction. A PDF download link has also been provided at the bottom of the article so that students can download it and use it as per their convenience. This formula sheet along with important definitions and diagrams has been prepared by our subject experts as per CBSE’s latest Syllabus and Sample Paper. So, students can be carefree while referring to these.
It often gets difficult for students to look for formulas and diagrams while practicing solutions and numerical problems. Thus, to assist you in your CBSE Board Examination preparation journey, we have brought to you this formula list that you can keep handy for the future.
Physics is a vast subject that deals with lots of formulas, concepts, diagrams, numerical problems, derivations, and all these mathematical calculations. Thus, keeping a list of formulas and diagrams handy can save up a lot of your time during practice.
Related:
CBSE Class 12 Ray Optics and Optical Instruments Formula List
CBSE Class 12 Physics Wave Optics Formulas, Diagrams, and Definitions are presented below:
Formula
Snells’ law of refraction- n1 sin i = n2 sin r
Displacement= 
Amplitude= 2a x cos(f/2)
Intensity(I) = 4 x Io x cos2(f/2)
Average Intensity= 2 Io
Constructive Interference/Dark fringes(Xn)= nλD/d
Destructive Interference/Bright fringes(Xn)= (n+1/2)λD/d
Wavelength= 2π/k
Malu’s Law=
Diagrams
Spherical Wavefronts
Huygen’s geometrical construction for a plane wave
Refraction of a plane wave
Refraction at a rare medium
Reflection of a plane wave by a plane surface
Diffraction by a single slit
Polarization
Also Find:
CBSE Class 12 Physics Syllabus 2023-2024
CBSE Class 12 Physics Sample Paper 2023-2024
CBSE Class 12 Physics NCERT Solutions
Definitions
- Wavefront- It is defined as a surface of constant phase. It is a locus of points, which oscillate in phase.
- Huygens Principle- Each point of the wavefront is the source of a secondary disturbance and the wavelets emanating from these points spread out in all directions with the speed of the wave. These wavelets emanating from the wavefront are usually referred to as secondary wavelets and if we draw a common tangent to all these spheres, we obtain the new position of the wavefront at a later time.
- Total Internal Reflection- The angle Ic is known as the critical angle and for all angles of incidence greater than the critical angle, we will not have any refracted wave and the wave will undergo what is known as total internal reflection.
- Superposition Principle- It states at a particular point in the medium, the resultant displacement produced by a number of waves is the vector sum of the displacements produced by each of the waves.
To download the formula sheet for Class 12 Physics Chapter Wave Optics, click on the link present below
