{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Quiz4-Sol-SSII091 - Physics 2C Summer Session II Quiz#4...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Physics 2C Summer Session II Quiz #4 Multiple Choice. Choose the answer that best completes the statement or answers the question. 1 . A plane wave of linearly polarized light is incident on a stack of 2 linear polarizers. The polarization angle of the incident light is rotated by an angle 3 °= 8 with respect to the °rst polarizer whose polarization axis is rotated by an angle ° °= 8 with respect to the second polarizer. The intensity of the light relative to the incident intensity, I=I 0 ; is A) : 073 B) 1 = 16 C) 1 = 8 D) 1 = 4 E) : 354 From the Law of Malus we have I I 0 = cos 2 (3 °= 8) cos 2 ( ° °= 8) = : 125 ! C 2 . Red light emitted by hydrogen atoms at rest in the laboratory has a wavelength of 656 : 3 nm . The same spectral line emitted by hydrogen atoms from a distant galaxy has a frequency of 4 : 16 ± 10 14 Hz . The relative velocity of the galaxy relative to Earth is (speed of light is c = 3 ± 10 8 m= sec ) A) 1 : 41 ± 10 7 m= sec B) 2 : 82 ± 10 7 m= sec C) 2 : 96 ± 10 7 m= sec D) 2 : 70 ± 10 7 m= sec E) 1 : 48 ± 10 7 m= sec The observed wavelength of the light as it reaches Earth is ± obs = 3 ± 10 8 = ° 4 : 16 ± 10 14 ± = 721 : 15 nm From the expression for the Doppler shift of light we °nd ± obs = ± em s 1 + v=c 1 ° v=c !
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}