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Chapter 33: Q. 18 (page 955)
A -wide slit is illuminated by light of wavelength . What is the width of the central maximum on a screenbehind the slit
Width of the central maximum is.
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Light ofwavelength illuminates a single slit of width . FIGURE shows the intensity pattern seen on a screen behind the slit. What is the distance to the screen
Scientists shine a laser beam on a -wide slit and produce a diffraction pattern on a screen behind the slit. Careful measurements show that the intensity first falls to of maximum at a distance of from the center of the diffraction pattern. What is the wavelength of the laser light?
A diffraction grating is illuminated simultaneously with red light of wavelengthand light of an unknown wavelength. The fifth-order maximum of the unknown wavelength exactly overlaps the third-order maximum of the red light. What is the unknown wavelength
Light from a helium-neon laser () is incident on a single slit. What is the largest slit width for which there are no minima in the diffraction pattern?
A Michelson interferometer operating at a wavelength has a -long glass cell in one arm. To begin, the air is pumped out of the cell and mirror is adjusted to produce a bright spot at the center of the interference pattern. Then a valve is opened and air is slowly admitted into the cell. The index of refraction of air at pressure is . How many brightdark-bright fringe shifts are observed as the cell fills with air?
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