15 A slit illuminated with sodium light is placed 60 cm from a straight edge and the diffraction pattern is observed using a photoelectric cell, 120 cm beyond the straight edge. De- termine the irradiance at (a) 2 mm inside and (b) 1 mm outside the edge of the geometrical shadow. Observation plane A = 589.3 nm %3D +1 mm Straight edge 2 mm 60 cm 120 cm Figure 23 Problem 15.

15 A slit illuminated with sodium light is placed 60 cm from a straight edge and the diffraction pattern is observed using a photoelectric cell, 120 cm beyond the straight edge. De- termine the irradiance at (a) 2 mm inside and (b) 1 mm outside the edge of the geometrical shadow. Observation plane A = 589.3 nm %3D +1 mm Straight edge 2 mm 60 cm 120 cm Figure 23 Problem 15.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter25: Geometric Optics

Section: Chapter Questions

Problem 32PE: A parallel beam of light containing orange (610 nm) and violet (410 nm) wavelengths goes from fused...

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Two closely spaced wavelengths of light are incident on a diffraction grating. (a) Starting with Equation 37.7, show that the angular dispersion of the grating is given by dd=mdcos (b) A square grating 2.00 cm on each side containing 8 000 equally spaced slits is used to analyze the spectrum of mercury. Two closely spaced lines emitted by this element have wavelengths of 579.065 nm and 576.959 nm. What is the angular separation of these two wavelengths in the second-order spectrum?
(a) Find the angle between the first minima for the two sodium vapor lines, which have wavelengths of 589.1 and 589.6 nm, when they fall upon a single slit of width 2.00 m. (b) What is the distance between these minima if the diffraction pattern falls on a screen 1.00 m from the slit? (c) Discuss the ease or difficulty of measuring such a distance.
A parallel beam of light containing orange (610 nm) and violet (410 nm) wavelengths goes from fused quartz to water, striking the surface between them an a 60.0° incident angle. What is the angle between the two colors in water?
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