Purchase Solution

Wave Optics: Diffraction through transmission grating.

Not what you're looking for?

Ask Custom Question

I have this problem which I'm not sure how to do. I understand the diffraction grating and all the formulae that describe diffraction with only a grating but I'm not sure how to do calculation when a grating is in combination with a lens. Could you please just explain how I should do this problem, but don't do any calculations to save time. You can maybe just write the first line of what needs to be calculated and leave the rest to me. Don't spend time deriving the grating formulae or calculating the slit width as I could do that.

The problem is:

A diffraction grating has slits ruled on opaque material and has 20 slits per mm. The distance between the slit centres is twice the width of each slit. The grating is uniformly illuminated at normal incidence. The transmitted light passes through a lens of focal length 1 m and then onto a screen that lies 1 m from the lens. On the screen the first-order diffraction peak lies 10mm from the centre-line of the apparatus. Calculate the wavelength of the light and predict the location of the next visible diffraction peak.

Purchase this Solution
Solution Summary

The setup with a grating and the position of first order maximum is given. The wavelength of the incident beam and the position of the second order peak is estimated.

Solution Preview

Please see the attached file.

A diffraction grating has slits ruled on opaque material and has 20 slits per mm. The distance between the slit centres is twice the width of each slit. The grating is uniformly illuminated at normal incidence. The transmitted light passes through a lens of focal length 1 m and then onto a screen that lies 1 m from the lens. On the screen the first-order diffraction peak lies 10mm from the centre-line of the apparatus. Calculate the wavelength of the light and predict the location of the next visible diffraction peak.

As light is considered a wave, every slit can be considered as a secondary source of light emitting waves in all directions. If ...

Purchase this Solution
Free BrainMass Quizzes
Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

The Moon

Test your knowledge of moon phases and movement.

Basic Physics

This quiz will test your knowledge about basic Physics.

View More Free Quizzes
Related BrainMass Solutions

  • diffraction angle of a transmission

    3826 diffraction angle of a transmission What is the diffraction angle for the first-order image produced by a transmission grating with 5800 lines/cm illuminated by monochromatic light with a wave length of 4920 angstroms?

  • Optics/light

    Rainbow Peephole consists of a 2-D defraction grating and flashlight that allow users to see color and white light through diffraction. Diffraction occurs because light simultaneously has both wave-like and particle-like properties.

  • Transmission Diffraction Grating

    186424 Transmission Diffraction Grating Please view the attached document for the diagram and proper formatting of this problem.

  • Millikan experiment, Compton effect, photoelectric effect

    Light from a slit passes through a transmission diffraction grating of 330 lines/mm, which is located 2.2 m from a screen.

  • Light Diffraction

    147910 Light Diffraction Spectral Regions A transmission grating is used to study the spectral region extending from 480 nm to 500 nm. The angular spread of this region is 20 degrees in the third order. 1.)

  • Diffraction of light: maximums by Grating

    An array of many identical slits placed close together with uniform spacing is called a grating. In a particular grating the slits are narrow enough to diffract the light passing through into a broad wavefront.

  • Physical Optics First Order Maximums

    There is 2 kinds of diffraction maxima in the case of diffraction grating.

  • Wave Optics: Interference and Diffraction

    213218 Wave Optics: Interference and Diffraction 1. Two waves shown in the attachment with the same amplitude, A, and wavelength, lamda, and traveling in the same direction. Initially the sources (dot at the origin) are also at the same point.

  • Diffraction grating

    3254 Diffraction Grating Assessed 1) If a diffraction grating has 6,000 grooves per centimeter, to what angle will the first order constructive interference "line" of the Hydrogen Alpha (red) emission be diffracted?

View More Related Solutions