MCAT PHYSICS 3

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allenwhycheng
ID:
59716
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MCAT PHYSICS 3
Updated:
2011-01-13 22:35:55
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mceat physics study flashcards
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studying to be a doctor
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  1. formula for magnification
    m=-i/o
  2. what type of image does a diverging (convex) mirror/lens create
    virtual upright image
  3. what type of image does a concave mirr/ lensor create if object is placed beyond focal point, if object is place inside focal point?
    beyond- real inverted image

    inside- virtual upright image
  4. does convex mirror have a (+) or (-) focal length? how about concave mirror?
    convex (-) focal length

    concave mirror (+)
  5. formula for index of refraction
    n=c(speed of light)/v (speed in the medium)
  6. Snell's law
    n1sin()1=n2sin()2
  7. under what conditions will light undergo total internal reflection
    when light travels from higher index to lower index at angle greater than critical angle
  8. does converging lens have a (+) or (-) focal legth? how about diverging lens?
    • converging (+)
    • diverging (-)
  9. (t/f) the real side of lens is the side opposite from the light source
    true
  10. formula for lens power
    P=1/focal length
  11. formula for calculating the energy of a photon
    • E=hf or E=hc/wavelength
    • h-Planck's constant
  12. photoelectric effect
    electron are emitted by a metal that is exposed to light of sufficiently high energy
  13. formula for kinetic energy of an emitted electron
    KE=h(f-fT) where fT is theshold frequency
  14. what happens when a electron jumps from a higher energy level to lower (orbit)?
    will emit a photon whose energy equals the difference in energy btwn the two orbits.
  15. what happens to atom's mass and atomic number when an alpha particle is emitted (alpha decay)
    • atomic number -2
    • mass number -4
  16. what happens to atomic /mass number after beta- decay?how about beta+ (positron) decay ?
    • beta-, the atomic number +1
    • beta+, th atomic number -1

    no change of mass number
  17. what happen to atomic/ mass number after gamma decay
    no change to both

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