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

n₁sin()₁=n₂sin()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
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

59716

Card Set

MCAT PHYSICS 3

Description

studying to be a doctor

Updated

2011-01-14T03:35:55Z

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