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Huygen’s Principle. Diffraction. Diffraction. Interference. Interference. Interference. Interference. Rainbow colors in soap bubble. Rainbow colors in gasoline on water. Polarization. Parallel filters. Crossed filters. Polarization. Hologram. create. view. -- Questions --.
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Interference Rainbow colors in soap bubble Rainbow colors in gasoline on water
Polarization Parallel filters Crossed filters
Hologram create view
-- Questions -- MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Polarization is a property of • transverse waves. • B) longitudinal waves. • C) both. • D) neither. • 2) Newton's rings are a demonstration of • A) reflection. • B) dispersion. • C) polarization. • D) interference. • E) refraction.
3) When long-wavelength light is seen in the interference colors of a soap bubble, the wavelength being cancelled is relatively • long. • short. • C) neither. • 4) Light will not pass through a pair of Polaroids when their axes are • A) parallel. • B) 45 degrees to each other. • C) perpendicular. • D) two of these. • E) all of these.
5) The function of polarizing filters in viewing 3-D slides or movies is to provide each eye • A) an independent left or right-hand view. • B) the ability to see parallax. • C) a balanced intensity. • D) a stereoscopic view. • E) with light polarized at right angles to each other. • 6) Because of absorption, a Polaroid will actually transmit 40% of nonpolarized light incident on it. Two such Polaroids with their axes aligned will transmit • 16%. • 24%. • 30%. • 32%. • E) 40%.
7) Colors seen when gasoline forms a thin film on water are a demonstration of • A) interference. • B) refraction. • C) dispersion. • D) reflection. • E) polarization. • 8) Holograms employ the principle of • interference. • B) diffraction. • C) both of these. • D) neither of these.
9) The polarization axes of ordinary sunglasses are • A) horizontal. • B) vertical. • C) at right angles to each other. • 10) A property of non-cubic transparent crystals is that light travels through them • A) in mutually perpendicular directions. • B) at different speeds along different optic axes. • C) and becomes polarized in the process. • D) without refracting. • E) none of these.
11) When you view a soap film by white light coming from almost behind your head, you see a certain color. A friend on the other side of the film likely sees • the same color. • B) a different color. • 12) The vibrational direction of the electron and the plane of polarization of the light it emits • A) are independent of each other. • B) are at right angles to each other. • C) are the same. • D) may or may not be at right angles to each other.
13) A thin film appears blue when illuminated with white light. The color being cancelled by destructive interference is • A) red. • B) blue. • C) green. • D) white. • E) none of these. • 14) Interference colors in a soap bubble give evidence that the soap film • has two reflecting surfaces. • B) is thin. • C) both of these. • D) neither of these.
15) Consider plane waves incident upon a barrier with a small opening. After passing through the opening, the waves • A) fan out. • B) continue as plane waves. • C) converge. • D) become polarized. • E) all of these. • 16) Some double-pane airplane windows darken when the inner pane is rotated. The panes are • thin films. • optical fibers. • C) Polaroid filters.
-- Answers -- MULTIPLE CHOICE. The one alternative that best completes the statement or answers the question.
Chapter 29 1) Answer: A 2) Answer: D 3) Answer: B 4) Answer: C 5) Answer: A 6) Answer: D 7) Answer: A 8) Answer: C 9) Answer: B 10) Answer: B 11) Answer: B 12) Answer: C 13) Answer: E 14) Answer: C 15) Answer: A 16) Answer: C