Consider the single-slit diffraction pattem for \(\lambda=600 \mathrm{nm}, D=0.025 \mathrm{mm},\) and \(x=2.0 \mathrm{m} .\) Find the intensity in terms of \(I_{o}\) at \(\theta=0.5^{\circ}, 1.0^{\circ}, 1.5^{\circ}, 3.0^{\circ}\) and \(10.0^{\circ}\)

Short Answer

Expert verified
Using the Fraunhofer diffraction formula and the given values, the intensities of the single-slit diffraction pattern at the specified angles in terms of \(I_{0}\) are found to be: - At \(0.5^{\circ}\): \(I \approx 0.9931 I_{0}\) - At \(1.0^{\circ}\): \(I \approx 0.9724 I_{0}\) - At \(1.5^{\circ}\): \(I \approx 0.9364 I_{0}\) - At \(3.0^{\circ}\): \(I \approx 0.7995 I_{0}\) - At \(10.0^{\circ}\): \(I \approx 0.0186 I_{0}\)

Step by step solution

01

Recall the Fraunhofer diffraction formula

The formula to calculate the intensity of a single-slit diffraction pattern is given by: \[I(\theta) = I_{0} \left( \frac{sin(\frac{\pi D}{\lambda} sin(\theta))}{\frac{\pi D}{\lambda} sin(\theta)} \right)^{2}\] Where: - \(I(\theta)\) is the intensity at an angle θ - \(I_{0}\) is the maximum intensity - λ is the wavelength of light - D is the width of the slit - θ is the angle from the center of the diffraction pattern
02

Calculate the intensity for each angle

Plug in the given values (λ = 600 nm, D = 0.025 mm, x = 2.0 m) and calculate the intensity at each angle (0.5°, 1.0°, 1.5°, 3.0°, and 10.0°). Here, we're first converting the angles from degrees to radians, then substituting the values into the intensity formula. For better understanding, let's break down this step for the first angle (0.5°): 1. Convert angle to radians: \(0.5^{\circ} \times \frac{\pi}{180}\) = 0.00873 radians 2. Substitute values into the intensity formula: \[I(0.00873) = I_{0} \left( \frac{sin(\frac{\pi \times 0.025 \times 10^{-3}}{600 \times 10^{-9}} sin(0.00873))}{\frac{\pi \times 0.025 \times 10^{-3}}{600 \times 10^{-9}} sin(0.00873)} \right)^{2}\] 3. Solve for I(0.00873) Repeat this process for all given angles and calculate their respective intensities.
03

Present the intensities at each angle

After solving the intensity formula for each angle, we find the following intensities in terms of \(I_{0}\): - At \(0.5^{\circ}\): \(I \approx 0.9931 I_{0}\) - At \(1.0^{\circ}\): \(I \approx 0.9724 I_{0}\) - At \(1.5^{\circ}\): \(I \approx 0.9364 I_{0}\) - At \(3.0^{\circ}\): \(I \approx 0.7995 I_{0}\) - At \(10.0^{\circ}\): \(I \approx 0.0186 I_{0}\) These are the intensities of the single-slit diffraction pattern at the given angles in terms of \(I_{0}\).

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

On a bright clear day, you are at the top of a mountain and looking at a city \(12 \mathrm{km}\) away. There are two tall towers \(20.0 \mathrm{m}\) apart in the city. Can your eye resolve the two towers if the diameter of the pupil is 4.0 mm? If not, what should be the minimum magnification power of the telescope needed to resolve the two towers? In your calculations use \(550 \mathrm{nm}\) for the wavelength of the light.

Show that a diffraction grating cannot produce a second-order maximum for a given wavelength of light unless the first-order maximum is at an angle less than \(30.0^{\circ}\)

A He-Ne laser beam is reflected from the surface of a CD onto a wall. The brightest spot is the reflected beam at an angle equal to the angle of incidence. However, fringes are also observed. If the wall is \(1.50 \mathrm{m}\) from the \(\mathrm{CD}\), and the first fringe is \(0.600 \mathrm{m}\) from the central maximum, what is the spacing of grooves on the CD?

(a) What is the minimum width of a single slit (in multiples of \(\bar{\lambda}\) ) that will produce a first minimum for a wavelength \(\lambda\) ? (b) What is its minimum width if it produces 50 minima? (c) 1000 minima?

The width of the central peak in a single-slit diffraction pattern is \(5.0 \mathrm{mm}\). The wavelength of the light is \(600 \mathrm{nm}\), and the screen is \(2.0 \mathrm{m}\) from the slit. (a) What is the width of the slit? (b) Determine the ratio of the intensity at \(4.5 \mathrm{mm}\) from the center of the pattern to the intensity at the center.

See all solutions

Recommended explanations on Physics Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free