This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Version PREVIEW Homework 6 Savrasov (39825) 1 This printout should have 10 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. Serway CP 24 29 001 10.0 points Heliumneon laser light of wavelength 650 . 2 nm is sent through a 0 . 259 mm wide single slit. What is the width of the central maximum on a screen 1 . 2 m from the slit? Correct answer: 6 . 02502 mm. Explanation: Given : = 650 . 2 nm = 6 . 502 10 7 m , L = 1 . 2 m , and a = 0 . 259 mm = 0 . 000259 m . y L We use the fact that for small . tan sin . tan = y L , and sin = a For small , tan = sin , so y L = a , and since the width x of the central maximum is equal to 2 y , x = 2 y = 2 L a = 2 (6 . 502 10 7 m) (1 . 2 m) . 000259 m 1000 mm 1 m = 6 . 02502 mm . Serway CP 24 31 002 (part 1 of 2) 10.0 points Light of wavelength 477 . 2 nm illuminates a single slit of width 0 . 62 mm. At what distance L from the slit should a screen be placed if the first minimum in the diffraction pattern is to be 0 . 85 mm from the central maximum? Correct answer: 1 . 10436 m. Explanation: Given : = 477 . 2 nm , y = 0 . 85 mm , and a = 0 . 62 mm . y L a S 1 S 2 viewing screen Since sin = y m L = m a , for the first minimum ( m = 1), L = a y = (0 . 00062 m) (0 . 00085 m) 4 . 772 10 7 m = 1 . 10436 m . Version PREVIEW Homework 6 Savrasov (39825) 2 003 (part 2 of 2) 10.0 points What is the width of the central maximum?...
View
Full
Document
 Fall '09
 RichardScalettar
 Work, Light

Click to edit the document details