A 0.50-mm-wide slit is illuminated by light of wavelength 500 nm. Part A What is the width of the central maximum on a screen 2.0 m behind the slit? Express your answer using two significant figures.

## Problem 17.25

Solar cells are given antireflection coatings to maximize their efficiency. Consider a silicon solar cell (n=3.50) coated with a layer of silicon dioxide (n=1.45). Part A What is the minimum coating thickness that will minimize the reflection at the wavelength of 698 nm where solar cells are most efficient?

## Problem 17.20

A 500 lines per mm diffraction grating is illuminated by light of wavelength 580 nm . Part A What is the maximum diffraction order seen? Express your answer as an integer. Part B What is the angle of each diffraction order starting from zero diffraction order to the maximum visible diffraction order? Enter your answers […]

## Problem 17.18

The human eye can readily detect wavelengths from about 400 nm to 700 nm. Part A If white light illuminates a diffraction grating having 870 lines/mm , over what range of angles does the visible m = 1 spectrum extend? Express your answers using three significant figures separated by a comma.

## Problem 17.11

Light from a helium-neon laser (λ = 633 nm) is used to illuminate two narrow slits. The interference pattern is observed on a screen 3.5 m behind the slits. Eleven bright fringes are seen, spanning a distance of 57 mm . Part A What is the spacing (in mm) between the slits? Express your answer […]

## Problem 17.7

Two narrow slits 55 μm apart are illuminated with light of wavelength 500 nm . Part A What is the angle of the m = 2 bright fringe in radians? Express your answer using two significant figures. Part B What is the angle of the m = 2 bright fringe in degrees? Express your answer […]

## Problem 17.6

A helium-neon laser beam has a wavelength in air of 633 nm. It takes 1.33 ns for the light to travel through 30.0 cm of an unknown liquid. Part A What is the wavelength of the laser beam in the liquid? Express your answer with the appropriate units.

## Problem 17.2

Part A How long (in ns) does it take light to travel 1.0 m in vacuum? Express your answer to two significant figures and include the appropriate units. Part B What distance does light travel in water, glass, and diamond during the time that it travels 1.0 m in vacuum? The refractive indices for water, […]

## Multiple Choice Question 17.22

Blue light of wavelength 475 nm passes through an interference grating with a slit spacing of 0.003 mm and makes an interference pattern on the wall. Part A How many bright fringes will be seen?

## Conceptual Question 17.9

(Figure 1) shows the light intensity on a viewing screen behind a single slit of width a. The light’s wavelength is λ. Part A Is λ<a, λ=a, λ>a, or is it not possible to tell? Drag the terms on the left to the appropriate blanks on the right to complete the sentences.