Search Colleges, Exams, Schools & more
Login
Fresnel's Biprism - Practice Questions & MCQ
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main
Quick Facts
-
1 Questions around this concept.
Concepts Covered - 1
Fresnel's Biprism
- It is an optical device for producing interference of light Fresnel's biprism is made by joining base to base two thin prism of very small angle.
- When a monochromatic light source is kept in front of biprism two coherent virtual source S1 and S2 are produced.
- Interference fringes are found on the screen placed behind the biprism interference fringes are formed in the limited region which can be observed with the help eyepiece.
- Fringes are of equal width and its value is $\beta=\frac{\lambda D}{d}$
-
- Let the separation between $\mathrm{S}_1$ and $\mathrm{S}_2$ be d and the distance of slits and the screen from the biprism be a and b respectively i.e. $D=(a+b)$. If the angle of the prism is $A$ and the refractive index is $\mu_{\text {then }} d=2 a(\mu-1) A$
$
\therefore \quad \lambda=\frac{\beta[2 a(\mu-1) A]}{(a+b)} \Rightarrow \beta=\frac{(a+b) \lambda}{2 a(\mu-1) A}
$
Study it with Videos
"Stay in the loop. Receive exam news, study resources, and expert advice!"
Books
Reference Books
Clear your Basics with NCERT
E-books & Sample Papers
Get Answer to all your questions
B.Tech/B.Arch Admissions OPEN
Among top 100 Universities Globally in the Times Higher Education (THE) Interdisciplinary Science Rankings 2026
RV University, Mysuru | B.Tech Admissions 2026
ApplyWorld-class and highly qualified engineering faculty. High-quality global education at an affordable cost
Amrita University B.Tech 2026
ApplyApplication Deadline: 15th April | Recognized as Institute of Eminence by Govt. of India | NAAC ‘A++’ Grade | Upto 75% Scholarships
Bharati Vidyapeeth B.Tech Admissions 2026
ApplyNAAC A++ Grade | All professional programmes approved by respective Statutory Council
VIT Bhopal University | B.Arch Admissions 2026
ApplyMark presence in the Modern Architectural field with Bachelor of Architecture | Highest CTC : 70 LPA | Accepts NATA Score
Somaiya Vidyavihar University B.Tech Admissions 2026
ApplyHighest CTC 58 LPA | Avg CTC 11.35 LPA| 150+ Recruiters