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MCAT PHYSICS 3
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formula for magnification
m=-i/o
what type of image does a diverging (convex) mirror/lens create
virtual upright image
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
does convex mirror have a (+) or (-) focal length? how about concave mirror?
convex (-) focal length
concave mirror (+)
formula for index of refraction
n=c(speed of light)/v (speed in the medium)
Snell's law
n
1
sin
()
1
=n
2
sin
()
2
under what conditions will light undergo total internal reflection
when light travels from higher index to lower index at angle greater than critical angle
does converging lens have a (+) or (-) focal legth? how about diverging lens?
converging (+)
diverging (-)
(t/f) the real side of lens is the side opposite from the light source
True
False
true
formula for lens power
P=1/focal length
formula for calculating the energy of a photon
E=hf or E=hc/wavelength
h-Planck's constant
photoelectric effect
electron are emitted by a metal that is exposed to light of sufficiently high energy
formula for kinetic energy of an emitted electron
KE=h(f-f
T
) where f
T
is theshold frequency
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.
what happens to atom's mass and atomic number when an alpha particle is emitted (alpha decay)
atomic number -2
mass number -4
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
what happen to atomic/ mass number after gamma decay
no change to both
Author
allenwhycheng
ID
59716
Card Set
MCAT PHYSICS 3
Description
studying to be a doctor
Updated
2011-01-14T03:35:55Z
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