Chapter 33: Wave Optics

FIGURE shows the light intensity on a screen $2.5m$behind an aperture. The aperture is illuminated with light of wavelength $620nm$.

a. Is the aperture a single slit or a double slit? Explain.

b. If the aperture is a single slit, what is its width? If it is a double slit, what is the spacing between the slits?

FIGURE shows the light intensity on a screen $2.5m$behind an aperture. The aperture is illuminated with light of wavelength $620nm$.

a. Is the aperture a single slit or a double slit? Explain.

b. If the aperture is a single slit, what is its width? If it is a double slit, what is the spacing between the slits?

Light from a helium-neon laser $(\lambda =633\mathrm{nm})$is used to illuminate two narrow slits. The interference pattern is observed on a screen $3.0m$behind the slits. Twelve bright fringes are seen, spanning a distance of$52mm$. What is the spacing (in mm) between the slits?

$FIGUREP33.36$shows the light intensity on a screen behind a double slit. The slit spacing is $0.20mm$and the wavelength of the light is $620nm$. What is the distance from the slits to the screen?

$FIGUREP33.36$shows the light intensity on a screen behind a double slit. The slit spacing is $0.20mm$and the screen is $2.0m$behind the slits. What is the wavelength (in $nm$) of the light?

$FIGUREP33.36$shows the light intensity on a screen behind a double slit. Suppose one slit is covered. What will be the light intensity at the center of the screen due to the remaining slit?

A diffraction grating having $500lines/mm$diffracts visible light at ${30}^{\circ }$.What is the light's wavelength?

FIGURE Q33.5 shows the light intensity on a viewing screen behind a single slit of width a The light's wavelength is$\lambda$. Is$\lambda <a,\lambda =a,\lambda >a$, or is it not possible to tell? Explain

Light of wavelength$550\mathrm{nm}$ illuminates a double slit, and the interference pattern is observed on a screen. At the position of the $\mathrm{m}=2$ bright fringe, how much farther is it to the more distant slit than to the nearer slit$?$

Helium atoms emit light at several wavelengths. Light from a helium lamp illuminates a diffraction grating and is observed on a screen$50.00cm$behind the grating. The emission at wavelength $501.5nm$creates a first-order bright fringe $21.90cm$from the central maximum. What is the wavelength of the bright fringe that is $31.60cm$from the central maximum?