**Double-Slit Interference Experiment**A double-slit interference experiment is performed in air. Later, the same apparatus is immersed in water (water's index of refraction is 1.33), and the experiment is repeated. When the apparatus is in water, what would you expect to see?- ○ The interference fringes are more closely spaced than when the apparatus is in air.- ○ The interference fringes are equally spaced as when the apparatus is in air.- ○ The interference fringes are more widely spaced than when the apparatus is in air.

Double split experiment is an experiment that demonstrates that light can behave both like a wave and a particle. In this experiment, light from a coherent source passes through two slits close to each other and is observed on the screen behind it. The wave nature of light is observed when interference of the light waves from two slits causes bright and dark bands on the screen. The particle nature is observed, as the light is absorbed on the screen at particular points only as individual particles. The distance between the two bands known as the fringe width is expressed as, β=λDd ......(1) where, λ, is the wavelength D, is the distance between the screen and the slits d, separation between the two slitsWhen the experiment is performed in water instead of air, the speed of the light decreases. This comparison is expressed as, μwμa=cvwcvaμwμa=vavw1.331=vavwvw=va1.33 The velocity decreases but the frequency remains the same. This means that the wavelength decreases when the experiment is performed in water. vw=fλwλw∝vw Therefore, from equation (1), βw=λwDdβw∝λw Hence, the fringe width decreases when the experiment is performed in water. First option is the correct answer. The interference fringes are more closely spaced than when the apparatus is in air.Second choice is incorrect because the fringe width cannot remain the same when the medium in which the experiment is performed changes. A the velocity changes, the wavelength will definitely change which is directly proportional to fringe width and hence is bound to cause a change in the fringe width. Third choice is incorrect because if fringe width were to be more wide, then the experiment would be needed to perform in a medium where the velocity increases instead of decreasing. But here the experiment is being performed in water where the velocity decreases.

Science

Physics

A double-slit interference experiment is performed in the air. Later, the same apparatus is immersed in water (water's index of refraction is 1.33), and the experiment is repeated. When the apparatus is in water, what would you expect to see? O The interference fringes are more closely spaced than when the apparatus is in air. The interference fringes are equally spaced than when the apparatus is in air. O The interference fringes are more widely spaced than when the apparatus is in air.

A double-slit interference experiment is performed in the air. Later, the same apparatus is immersed in water (water's index of refraction is 1.33), and the experiment is repeated. When the apparatus is in water, what would you expect to see? O The interference fringes are more closely spaced than when the apparatus is in air. The interference fringes are equally spaced than when the apparatus is in air. O The interference fringes are more widely spaced than when the apparatus is in air.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

In a Young’s double-slit experiment, light of wavelength 589\,nm from a Sodium laser illuminates two very narrow parallel slits separated by 0.8\,mm in an opaque screen. Interference is observed on a second screen at distance 5\,m from the first screen. Calculate the spacing between consecutive bright fringes on the screen.Give your answer in mm to 1 d.p.
i
Coherent light that contains two wavelengths, 660 nm (red) and 470 nm (blue), passes through two narrow slits that are separated by 0.460 mm. Their interference pattern is observed on a screen 4.00m fromthe slits. What is the distance on the screen between the first - order bright fringes for the two wavelength?
A thin film of oil is on water. What is the thinnest that the oil can be to have constructive interference on reflection? The wavelength of the light in air is 480nm. Assume the beam starts in air. [n =1.00 ,n =1.50 , nwaer =1.33]
If the wavelength of light used in Young's double slit experiment is decreased, which one of the following statements is true of the interference pattern? O The distance between the minima stays the same. The distance between the maxima decreases. The distance between the minima increases. The distance between the maxima stays the same.
A breakwater at the entrance to a harbor consists of a rock barrier with a 45.5-m-wide opening. Consider ocean waves with wavelength 21.7 m approach the opening straight on. 1) If the opening to the harbor acts just like a single-slit which diffracts the ocean waves entering it, what is the largest angle, in degrees relative to the incident direction, that a boat in the harbor would be protected from the wave action?
A light source is directed through a diffraction grating such that it produces an interference pattern on a screen. If the spectrum on the screen is nearly continuous, with the exception of 3 small dark lines. Which of the following is most likely the light source? O A white light source O A white light source passing through a cool gas O An electrically charged gas O A hot gas
A thin film of oil (n=1.4) rests on the surface of a pool of water (n=1.33). Light with frequency 5.0x10^14 Hz traveling through air (n=1) is normally incident upon the oil, undergoing thin film interference. a) Will there be a relative phase shift? b) What is the wavelength of the light in the oil? c) What minimum thickness should the oil have if we wish to get constructive interference? d) What minimum thickness should the oil have if we wish to get destructive interference? Please write your answers in the space below and email your work. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). B I U S Paragraph Arial V 10pt くく AV I XQ 5 ते EE ...
A thin film with an index of refraction of 1.50 is placed in one of the beams of a Michelson interferometer. If this causes a shift of 8 bright fringes in the pattern produced by light of wavelength 480 nm, what is the thickness of the film?
An ideal double slit interference experiment is performed with light of wavelength 640 nm. A bright spot is observed at the center of the resulting pattern as expected. For the 2nd bright spot away from the center, it is known that light passing through the more distant slit travels nm further than the light traveling from the closer slit. (Enter just the number - 800 don't include "nm")
A planar light with a wavelength of 500 nm (20) is incident on two long slits of 0.10 mm width, 0.20 mm apart, on an opaque screen. If the curtain is Im from the slit and the source is 0.5m from the burn, does the resulting pattern correspond to Fraunhofer diffraction or Fresnel diffraction? How many interference fringes appear within the bright central stripe.
When green (550 nm) light is shone through a double slit the angle of the first dark fringe is 1.9 degrees. Calculate the angle in degrees of the second dark fringe.