---
title: "A monochromatic laser beam with a wavelength of \\(\\lambda = 600\\text{ nm}\\) is incident perpendicularly on a diffraction grating ruled with \\(300\\text{ lines/mm}\\). A large semicircular screen is positioned behind the grating, centered on the point of incidence, to capture all transmitted diffraction maxima. What is the total number of bright interference fringes (maxima) that can be observed on the screen?"
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url: "https://nerd-notes.com/ubq/123194/"
date_modified: "2026-09-28T11:57:53+00:00"
---

# A monochromatic laser beam with a wavelength of \(\lambda = 600\text{ nm}\) is incident perpendicularly on a diffraction grating ruled with \(300\text{ lines/mm}\). A large semicircular screen is positioned behind the grating, centered on the point of incidence, to capture all transmitted diffraction maxima. What is the total number of bright interference fringes (maxima) that can be observed on the screen?

A monochromatic laser beam with a wavelength of \(\lambda = 600\text{ nm}\) is incident perpendicularly on a diffraction grating ruled with \(300\text{ lines/mm}\). A large semicircular screen is positioned behind the grating, centered on the point of incidence, to capture all transmitted diffraction maxima. What is the total number of bright interference fringes (maxima) that can be observed on the screen?

![A top-down schematic view of an optical setup. A horizontal dashed central axis extends from left to right. On the left, a horizontal solid arrow pointing to the right along the central axis represents the incident laser beam, labeled with wavelength \(\lambda = 600\text{ nm}\). The beam strikes a small vertical line segment at the center representing a diffraction grating, labeled \(300\text{ lines/mm}\). To the right of the grating, a large semicircular arc centered on the grating represents the screen. No other labels, lines, text, or axes appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1790596673-jXbW30.jpg)

- **A.** \(5\)
- **B.** \(6\)
- **C.** \(10\)
- **D.** \(11\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/123194/*