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53. Light travels from inside a building to outside through a pane of glass Which ofthe following is tnie regarding the phase change upon reflection

Hi, I need help on 3 multiple choice physics questions, please show your work!

Questions: 53, 59, and 60?

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exam 3 physics 3.png

53. Light travels from inside a building to outside through a pane of glass Which ofthe following is tnie
regarding the phase change upon reflection in the case?
a. A I80” phase change occurs at the inside surface but not at the outside surface.
b. A I130JD phase change occurs at the outside surface but not at the inside surface.
c. A I30” phase change occurs at both the inside surface and the outside surface.
d. No phase change occurs at either the inside surface or the outside surface ofthe glass 54. What is the minimum thickness ofa glycerin film [a- = 1.4?) on which light ofwavelength 450 nm shines
that results in constructive interference of the reflected light'? Assume the film is surrounded front and back by air.
a. l 50 nm e. 204 nm
b. 76.5 nm d. 102 nm 56. A silicon monoxide thin film [it = 1.45} of thiclmess TIE nm is applied to a camera lens made ofglass [a
= 1.55]. This will result in a destructive interference for reflected light ofwhat wavelength“.JI
a. 220 nm e. 450 nm
b. 550 rim {1. 522 nm 5?. A Young‘s double slit has a slit sepmation of 2.50 x 104 In on which a monochromatic light beam is
directed. The resultant bright hinges on a screen 1.00 m from the double slit are sepmated by 2.30 x 10’1
In. What is the wavelength of this beam? [1 not = I04} m] a. 525nm c. 323 nm
b. 454nm d. fidTmn 50. Two narrow slits are 0.025 mm apart. When a laser shines on 01am, bright fringes form on a screen that
is a meter away. These fringes are 1.3 cm apart. What is the separation between the m = 2 bright fringe and the central fringe? a. 2.ticrn c. 3.6 cm
b. 5.3cm d. ti.0cm 50. A Young‘s double-slit apparatus is set up so that a screen is positioned 1.6 m from the double slits, and
the spacing between the two slits is 0.0315 mm. What is the distance between alternating bright fringes on the screen ifthe light source has a wavelength ofti30 run? [I am =10'll m]
a. 0.0Iti m c. 0.025 m b. 0.04'l'm d. 0.032m 60. A Young‘s double-slit appmatus is set up. A screen is positioned [.1 ti In from the double slits, and the
spacing between the two slits is 0.0500 mm. The distance between alternating bright fi'inges is L42 cm. What is the lightsnrurce wavelength"? [I am = I04 m]
a. 612 nm e. 400 nm
b. 230' rlrn d. 355 mu

Top Answer

number 53 correct answer is option (B)A 180 degree phase change occurs at... View the full answer

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