Disregard the answer I put PH 142-Spring 2018 Midterm Exam 2 Total 125 Points Qu

Question

Disregard the answer I put PH 142-Spring 2018 Midterm Exam 2 Total 125 Points Question 9 (10 Points The woven materials can act as diffraction grating for distant sources of light sach street lamps. At night a diffraction pattem froem a mesh curtain is observed on the wail of a hotel room that is 10 meters from the curtains, If the distance between the zcto order fringes is 12 mm, and the light from the streetlight has a wavelength of 589 nm. and first determine the separation of the individual fibers in the curtain (w 3(0.00059 61012 n m Score

Explanation / Answer

Given,

D = 10 m ; y = 12 mm ; lambda = 589 mm

We know that,

y = m lambda D/d

d = m lambda D/y

d = 1 x 589 x 10^-9 x 10/(12 x 10^-3) = 4.9 x 10^-4 m

Hence, d = 4.9 x 10^-4 m

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

---