Q. 7

Expert-verified
Found in: Page 954

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# Narrow, bright fringes are observed on a screen behind a diffraction grating. The entire experiment is then immersed in water. Do the fringes on the screen get closer together, get farther apart, remain the same, or disappear? Explain.

The edges of the fringes are getting closer to each other.

See the step by step solution

## Step 1: Introduction

The dazzling fringe occurs when the crest of one waveform corresponds with the crest of another. The dark fringe occurs when the trough of one wave coincides with the trough of another, resulting in dark fringes.

## Step 2: Explanation

We already know that . When the experiment is submerged in water, the frequency of the light stays constant, but the wavelengths drops as the movement slows. As the wavelength of light decreases, the fringes become closer together.