COMEDK · Physics · 26. Wave Optics
In Young's double slit experiment, the fringe width is found to be \(0.4 \mathrm{~mm}\). If the whole apparatus is immersed in a liquid of refractive index \(\dfrac{4}{3}\) without changing geometrical arrangement, the new fringe width will be
- A 0.45 mm
- B 0.4 mm
- C 0.53 mm
- D 0.30 mm
Answer & Solution
Correct Answer
(D) 0.30 mm
Step-by-step Solution
Detailed explanation
The fringe width \(\beta\) in Young's double slit experiment is given by the formula \(\beta = \dfrac{\lambda D}{d}\), where \(\lambda\) is the wavelength of light, \(D\) is the distance between the slits and the screen, and \(d\) is the distance between the two slits. When the…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- Which of the following statement(s) is/are correct?COMEDK 2024 Easy
- The escape velocity is \(11.2 \mathrm{~km} / \mathrm{s}\). If a body is to be projected in a direction making an angle \(60^{\circ}\) to the vertical, then the escape velocity isCOMEDK 2024 Easy
- A spherical metal ball of density '\(\rho\)' and radius '\(r\)' is immersed in a liquid of density '\(\sigma\)'. When an electric field is applied in the upward direction the metal ball remains just suspended in the liquid. Then the expression for the charge on the metal ball is :COMEDK 2023 Medium
- In an adiabatic process with the ratio of two specific heat, \(\gamma=\dfrac{3}{2}\), pressure is increased by \(\dfrac{2}{3} \%\), then decrease in the volume will beCOMEDK 2021 Medium
- A series LCR circuit having \(\mathrm{R}=44 \Omega, \mathrm{~L}=2 \mathrm{H}\) and \(\mathrm{C}=25 \mu \mathrm{~F}\) is connected to a variable frequency of 220 V . What is the average power transferred to the circuit in one complete cycle if the frequency of supply equals the natural frequency of the circuit?COMEDK 2025 Medium
- A long solenoid has 20 turns \(\mathrm{cm}^{-1}\). The current necessary to produce a magnetic field of \(20 \mathrm{mT}\) inside the solenoid is approximatelyCOMEDK 2021 Hard
More PYQs from COMEDK
- A reaction between a carbonyl compound and a Grignard reagent is termed asCOMEDK 2014 Easy
- The conjugate of \(z = \dfrac{(4 + i)(1 - i)}{(1 + i)(2 - i)}\)COMEDK 2026 Medium
- The equation of the perpendicular drawn from the point \(A(6, 1, 3)\) to the line \(\dfrac{x-1}{2} = \dfrac{2-y}{-1} = \dfrac{z-3}{2}\) is \(\dfrac{x-6}{a} = \dfrac{y-1}{b} = \dfrac{z-3}{c}\). If \(a, b, c\) are the possible integers such that \(a < 0\), then the value of \(a - b + 5c\) is:COMEDK 2026 Medium
- An ideal gas is taken through the cycle \(A \to B \to C \to A\), as shown in the figure (assume Volume \(V\) is in \(m^3\)). If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process \(C \to A\) is,
COMEDK 2022 Medium - The relative errors in the measurement of two lengths \(1.02 \mathrm{~cm} \pm 0.01 \mathrm{~cm}\) and \(9.89 \mathrm{~cm} \pm 0.01 \mathrm{~cm}\) isCOMEDK 2021 Easy
- Two statements, One Assertion (A) and the other Reason (R) are given. Choose the right option.
Assertion: The rate constant \((\mathrm{k})\) for a chemical reaction gets nearly doubled for a \(10^{\circ}\) rise in temperature.
Reason: The number of bimolecular collisions between reactant molecules increase with increase in temperatureCOMEDK 2025 Medium