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princess001 princess001
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10 years ago Edited: 10 years ago, princess001
As part of a laser light show, the technician is adjusting a diffraction grating. A green laser with a wavelength of 532 nm is shone on a diffraction grating with 2700 lines/cm. The screen is 35 m from the diffraction grating.

 a)  What is the distance between the slits of the diffraction grating?
  
 b)  How far from the central maximum will the bright fringe be?



A scientist is double-checking the wavelength of a new laser. The scientist sets up a diffraction grating with 5.00×10–6 m between slits, in front of the laser 1.50 m in front of a screen. The scientist measures the distance from the central maximum to the second bright fringe, which is 0.330 m. What is the wavelength of the laser?
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wrote...
10 years ago
What is the distance between the slits of the diffraction grating

Given:

Wavelength = 5.32*10-7 m
D=2700/100 = 2.7*10-5 m
L=35
N=1

Analysis:

Wavelength = xd/nl
X= (wavelength)(nl) / d

X= 1.69 *10-1 m
The distance between the slits of the diffraction grating is 1.69*10-1cm

b)  How far from the central maximum will the bright fringe be?

Recall, the distance between the diffraction slits is just D = 2700/100 = 2.7*10^-5 m. X is the distance between the bright fringes (or between the dark fringes).
wrote...
10 years ago
A scientist is double-checking the wavelength of a new laser. The scientist sets up a diffraction grating with 5.00×10–6 m between slits, in front of the laser 1.50 m in front of a screen. The scientist measures the distance from the central maximum to the second bright fringe, which is 0.330 m. What is the wavelength of the laser?

have you tried using this formula?



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Anonymous
wrote...
2 months ago
Thanks!
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