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Author Question: A diffraction grating has 450 lines per mm. What is the highest order m that contains the entire ... (Read 38 times)

krzymel

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on: Jul 29, 2018
A diffraction grating has 450 lines per mm. What is the highest order m that contains the entire visible spectrum from 400 nm to 700 nm?
 
  A) m = 2
  B) m = 3
  C) m = 4
  D) m = 5
  E) m = 6

Question 2

A light beam shines through a thin slit and illuminates a distant screen. The central bright fringe on the screen is 1.00 cm wide,
 
  as measured between the dark fringes that border it on either side. Which of the following actions would decrease the width of the central bright fringe? (There may be more than one correct choice.)
  A) increase the wavelength of the light
  B) decrease the wavelength of the light
  C) increase the width of the slit
  D) decrease the width of the slit
  E) put the apparatus all under water


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abctaiwan

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Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

This is great. Thanks


krzymel

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Reply 2 on: Jul 29, 2018
:D TYSM

apple

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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