Transcript Honors Physics Final Review Spring 2015

Honors Physics Final Review
An image that appears to form within the
reflective surface is a ________ image?
ans: virtual
The reference line perpendicular to the
reflective surface is called the ___
ans: normal
How is a plane mirror and a convex mirror alike?
ans: both form virtual images only
As the wavelength increases, the frequency
will ______________.
ans: decreases
What is the speed of all electromagnetic
radiation?
ans: 3 x 108 m/s
Which has a greater frequency: Red light or
Blue light:
ans: Blue light
An object is placed 5 cm in front of a plane
mirror, where will the image appear?
ans: 5 cm into the reflective surface
Where is an object placed in front of a concave
mirror for the image to seem to disappear?
ans: at F
Where is the object place in front of a concave
mirror for the image to be the same size?
ans: at C
What type of wave is a series of compressions
and rarefraction?
ans: longitudual
A mechanical wave has a wavelength of 40 cm
and a frequency of 32 Hz. What is the speed of
the wave?
ans: 1280 cm/s
What is the wavelength of a light wave with a
frequency of 4.7 x 1014 Hz in nm?
ans: 638 nm
What is the color of the light at 638 nm?
ans reddish orange
Rank high frequency to low: UV, FM, yellow
ans: UV  yellow  FM
What is the equation for magnification?
ans: M = –q/p , M = -di/do
What is q and p above?
ans q = focal length p = distance to object
A beam of light travels from a medium with n=
1.33 to a index of n = 1.00. Will the beam bend
toward or away from the normal?
ans: away
Which medium is denser, n = 1.66 or n = 1.923
ans: n= 1.923
What is the index of refraction for a light that
travels at 2.26 x 108 m/s?
ans: 1.33
Light travels from the air at an angle of incident of
12o into a pool of pure water (n = 1.33). Will the
light bend away or toward the normal?
ans: toward the normal
What is the angle of refraction for the above?
ans: 9o
The angle of incident when the refracted light is
bend parallel to the medium interface is:
ans: critical angle
When will internal refraction occur: 1) when light
travels from air to glass or 2) when light travels
from glass to air?
ans: greater dense to less dense, #2
What is the equation for the critical angle?
ans: θc = nr / ni for ni > nr
Which would have a smaller angle of incident
before the critical angle is reached: flint glass or
diamond
ans: diamond: greater density = smaller
critical angle
In which medium does light travel slower: water
or glass?
ans: glass b/c denser
What two things MUST be true for constructive
interference to occur?
ans; in-phase and same wavelength
What type of wave interaction is described: Two
fronts approach each other. One is displaced by
10 cm and the other displaced by 8 cm. At the
point of crossover the displacement is 2 cm.
ans: destructive interference
After the interaction from above is
complete, what is the displacement of the
two waves?
ans: 10 cm and 8 cm
A first order line appears 13.2 mm from the
central bright line from two slits 1.9 x 10-5
m apart. What is the λ with a screen 0.6 m
ans 418 nm
What is the SI unit for electrical charge?
ans: coulomb, c
What will happen to the force between two
charged bodies one + the other - as they are
brought closer together?
ans: force will increase
Surface charges can be induced on insulators by
__________?
ans: polarization
The process of charging a conductor by bring it
near another charged object and grounding the
conductor is called:
ans: induction
The force acting between two charged bodies is
directly proportional to the size of the bodies and
inverse to the distance squared between the
bodies is what Law:
ans: Coulombs Law
The SI unit of current is
ans: ampere’ , A
The SI unit of potential difference is
ans: volts , V
The SI unit for power is?
ans : Watt, W
What is the equation for Ohm’s Law?
ans Ω = V / I
What is the equation that define power?
ans: P = V2 / Ω
What is the potential difference of a battery with
3 cells at 1.5 v each arranged in parallel
ans: 1.5 v
What is the potential difference in the above if
the cells are arranged in series?
ans: 4.5 volts
The amount of force exerted on a container is
transmitted equally throughout that container is
a description of :
ans: Pascal’s Principle
NOTE
•Read a parallel and series circuit
•Calculate position to image and magnification.
•Calculate electric force
•Calculate power, current, voltage, resistance.
(also from a circuit diagram)
•Calculate magnetic force