{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Quiz4-Sol-SSII091

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

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

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 !

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}