Question:
Interference was observed in an interference chamber when air was present. Now, the chamber is evacuated and if the same light is used, a careful observation will show
Interference was observed in an interference chamber when air was present. Now, the chamber is evacuated and if the same light is used, a careful observation will show
Updated On: Jun 7, 2022
- no interference
- interference with bright band
- interference with dark bands
- interference in which breadth of the fringe will be slightly increased
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
When chamber is evacuated, the refractive index $(\mu)$ decreases. Therefore, wavelength $\left(\lambda \propto \frac{1}{\mu}\right)$ increases.
Now, fringe width is given by
$ \beta=\frac{\lambda D}{d} $
$\Rightarrow \beta \propto \lambda$
Therefore, as wavelength increases, the fringe width will increase.
Now, fringe width is given by
$ \beta=\frac{\lambda D}{d} $
$\Rightarrow \beta \propto \lambda$
Therefore, as wavelength increases, the fringe width will increase.
Was this answer helpful?
0
0
Top Questions on Wave optics
- A beam of unpolarized light of intensity I0 is passed through a polaroid A, then through another polaroid B, oriented at 60º and finally through another polaroid C, oriented at 45º relative to B as shown. The intensity of emergent light is:
- NEET (UG) - 2024
- Physics
- Wave optics
- Interference pattern can be observed due to superposition of the following waves:
A. \(y = a \sin \omega t\) B. \(y = a \sin 2\omega t\)
C. \(y = a \sin(\omega t - \phi)\) D. \(y = a \sin 3\omega t\)
Choose the correct answer from the options given below.- NEET (UG) - 2024
- Physics
- Wave optics
- Two slits in Young’s double slit experiment are 1.5 mm apart and the screen is placed at a distance of 1 m from the slits. If the wavelength of light used is \(600 \times 10^{-9}\, \text{m}\), then the fringe separation is:
- NEET (UG) - 2024
- Physics
- Wave optics
- In a single slit experiment, a parallel beam of green light of wavelength 550 nm passes through a slit of width 0.20 mm. The transmitted light is collected on a screen 100 cm away. The distance of first order minima from the central maximum will be\(x \times 10^{–5}\)m. The value of x is :
- JEE Main - 2024
- Physics
- Wave optics
- Two wavelengths \( \lambda_1 \) and \( \lambda_2 \) are used in Young's double slit experiment. \( \lambda_1 = 450 \, \text{nm} \) and \( \lambda_2 = 650 \, \text{nm} \). The minimum order of fringe produced by \( \lambda_2 \), which overlaps with the fringe produced by \( \lambda_1 \), is \( n \). The value of \( n \) is _____.
- JEE Main - 2024
- Physics
- Wave optics
View More Questions
Questions Asked in JIPMER exam
- Binomial nomenclature was first introduced by
- JIPMER - 2015
- KCET - 2022
- Diversity In The Living World
- A convex lens $'A'$ of focal length $20\, cm$ and a concave lens $'B'$ of focal length $5\, cm$ are kept along the same axis with a distance $'d'$ between them. If a parallel beam of light falling on $'A'$ leaves $'B'$ as a parallel beam, then the distance $'d'$ in cm will be :
- JIPMER - 2021
- Spherical Mirrors
- A bacterial flagellum is composed of
- JIPMER - 2021
- Prokaryotic Cells
- $2,4-DNP $ test can be used to identify :
- JIPMER - 2021
- Chemical Reactions
- How many moles of acidified $K_2Cr_2O_7$ is required to liberate $6$ moles of $I_2$ from an aqueous solution of $I^-$ ?
- JIPMER - 2020
- Mole concept and Molar Masses
View More Questions
Concepts Used:
Wave Optics
- Wave optics are also known as Physical optics which deal with the study of various phenomena such as polarization, interference, diffraction, and other occurrences where ray approximation of geometric optics cannot be done. Thus, the section of optics that deals with the behavior of light and its wave characteristics is known to be wave optics.
- In wave optics, the approximation is carried out by utilizing ray optics for the estimation of the field on a surface. Further, it includes integrating a ray-estimated field over a mirror, lens, or aperture for the calculation of the transmitted or scattered field.
- Wave optics stands as a witness to a famous standoff between two great scientific communities who devoted their lives to understanding the nature of light. Overall, one supports the particle nature of light; the other supports the wave nature.
- Sir Isaac Newton stood as a pre-eminent figure that supported the voice of particle nature of light, he proposed a corpuscular theory which states that “light consists of extremely light and tiny particles, called corpuscles which travel with very high speeds from the source of light to create a sensation of vision by reflecting on the retina of the eye”.