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MCAT Physics - Optics
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Preguntas del test (10)
1Light is propagating is a direction directly away from you, with an electric field that appears to be rotating in its orientation in the counterclockwise direction. The polarization state of such a wave is:
- ARandomly polarized.
- BPlane polarized.
- CLeft-circularly polarized.
- DRight-circularly polarized.
2A birefringent material is best described as:
- AHaving two different transmission axes.
- BHaving atoms with two different resonant frequecies.
- CCircularly polarizing natural light.
- D Having two different indices of refraction.
3In a Young's Double Slit interference pattern, the fourth maximum has an irradiance that is roughly:
- AAs bright as the central maximum.
- BHalf as bright as the central maximum.
- C 8% as bring as the central maximum.
- D0.08% as bright as the central maximum.
4Which of the following is true for all lenses:
- AAll magnified images are inverted.
- BAll virtual images are inverted.
- CAll real images are inverted.
- DAll diminished images are inverted.
5The radius of curvature of a convex mirror of focal length -8 centimeters is:
- A-4 centimeters.
- B16 centimeters.
- C4 centimeters.
- D-16 centimeters.
6Virtual images are so called because:
- ALight rays that form the image only appear to come from the position where the image is.
- BThe image is too small to be seen with the naked eye.
- CThe image can only be projected onto a screen.
- DThe image is located behind the lens or mirror.
7The spectrum observed when white light is shone through a prism is best explained by:
- ADiffraction
- BDichroism
- CDistortion
- DDispersion
8The irradiance of a light ray is proportional to:
- AThe frequency of the light ray.
- BThe frequency of the light ray squared.
- CThe amplitude of the electric field of the light ray.
- D The amplitude of the electric field of the light ray squared.
9One reason why the sky appears blue is because:
- AMuch more red light than blue light is absorbed by air atoms.
- BRed light is reflected by the atmosphere.
- CBlue light is scattered to a greater extent than red light.
- DHigher energy light waves have more penetration through the atmosphere.
10Which of the following is true: I) A reflected beam always has the same irradiance as the incident beam; II) a reflected beam lies in the same plane as the incident beam; III) a reflected beam always makes an angle θ = sin-1(n t/n i) with the normal to the interface.
- AI only.
- B I and II.
- CII and III.
- DII only.
Información
- Descripción
- A-Level MCAT Test sobre MCAT Physics - Optics, creado por Jen Molte el 21/05/2014.
- Autor
- Jen Molte
- Idioma
- English
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