Download COLLEGE PHYSICS, PS 104

PHYS-104, COLLEGE PHYSICS
Behavioral Objectives - Unit IV(a)
Light
C
A.
For electromagnetic waves, be able to:
a.
identify and apply the basic properties of electromagnetic
waves to a practical situation, i.e. how EM waves consist of
coupled electric and magnetic fields (at right angles), how
a charge radiates EM waves, the speed of the waves in the
same and in different media, etc.
*b. identify and discuss the two principal methods of
transmitting information in an EM wave, i.e. amplitude and
frequency modulation in terms of how they can transmit the
information, difficulties with amplitude modulation, and
practical applications such as short-wave radio for
long-range transmission.
c.
identify the relative frequency (wavelength) and energy for
long-wave radio, short-wave radio, microwaves, millimeter
waves, infrared, light, ultraviolet, x-rays, and gamma rays.
d.
solve for the frequency, speed or wavelength in terms of the
other variables.
e.
solve for the frequency of a wave for a given period and
identify the type of wave it represents.
C
B.
In relation to the Wave (Huygen’s) and Quantum (particle) Theory
of Light, be able to identify:
a.
the principles of each.
b.
how to apply each theory to a practical situation.
c.
what physical property of light disproved one theory and
why.
d.
how light is propogated for most optical phenomena.
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C.
For light, be able to identify: how illumination varies with
distance (mathematically); illustrations of possible light
phenomena; approximate wavelength and frequency range for light;
a correct definition of light; arrange a list of colors in order
of wavelengths (frequencies).
C
D.
Using the laws of reflection, be able to:
a.
identify their basic principles.
b.
apply to explain a practical situation including how we see
colored objects.
c.
identify the physical principles involved and outcome of a
physical situation utilizing them, i.e. the height of the
smallest mirror to see your full length.
d.
draw a ray diagram for (b), i.e. plane mirror.
e.
distinguish between a real and a virtual image.
*Optional
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C
E.
Using the laws of refraction, be able to:
a.
identify a practical application of them.
b.
identify the physical principles involved in a practical
situation.
c.
identify the outcome of a physical situation utilizing them,
i.e. dispersion, how a light wave is bent traveling from
water into air comparing the incident and refracted angle,
etc.
d.
what is meant by the index of refraction and apply to a
practical situation.
e.
solve for the index (indicies) of refraction, incident
angle, and/or refracted angle in terms of the other two
variables.
f.
solve for the index of refraction, speed of light in free
space, and/or speed of light in the medium in terms of the
other two variables.
g.
draw a ray diagram to illustrate a given physical situation.
F.
For total internal reflection, be able to:
a.
identify the physical principles involved in a practical
situation, i.e. light pipe in fiber optics.
b.
identify the outcome of a practical situation.
c.
solve for the critical angle in terms of the indicies of
refraction.
d.
calculate the minimum index of refraction given the critical
angle.
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C
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Laboratory Objectives
A.
Apply the reflection principles of plane mirrors learned to solve a
practical situation (to include the drawing of a proper ray diagram)
as well as know the characteristics of the image formed, i.e. size,
real or virtual, upright or inverted, and sides reversed or not.
B.
Calculate the index of refraction for an unknown piece of transparent
solid using the laser and pin sighting techniques to find the incident
and refracted angles within 15% error. Also, identify the physical
principles involved in a practical situation and be able to answer a
practical application question.
*Optional
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Learning Objectives for E-M Waves, Reflection and Refraction of Light
Read:
College Physics, Serway, 9th ed, Chapter 21, pps. 739-743, 746-749; Chapt. 22, skim pps. 771-774
College Physics (Schaum’s Outline), pp. 391, 394, 401-405,11th ed (pp. 348, 351 and 357-361 in 10th ed)
Optional:
Conceptual Physics, pp. 496-502, 515-518, 530-540, 543-546, 558-566 and 601-607 in 10th ed.
Homework:
Chapt. 21, Multiple Choice Q 15; Concept Q’s 3, 6 & 9; Problems 49, 59 and Extra (not extra credit)
If an electromagnetic wave in space has an electric field with a 330V/m amplitude, find the amplitude of its
magnetic field.
Chapt. 22, MC Q 6; Concept Q’s 2, 10, plus Extra (not extra credit)
1.What happens to a light wave when it travels from air into glass? (a) Its speed remains the same, (b) Its speed
increases, (c) Its wavelength increases, (d) Its wavelength remains the same, (e) Its frequency remains the same.
2. What is the height of the smallest mirror in which a 160 cm tall woman can see herself at full length? Does
it matter how far she stands from the mirror?
Problems 4, 5(a) & (b), 7(a) & (c), 9, 11, 19, 22*, 34(a), (c), 37 and 59*
ANSWERS TO EVEN-NUMBERED SELECTED PROBLEMS for Chapter 21
Extra. 1.10 x 10-6 T
Chapter 22
4 (a) 550 nm (b) 0.367 µm (c) 2.26 eV (d) no change in energy
34. (a) 43.3 degrees
(c) 40.4 degrees
Laboratory:
Reflection and Plane Mirrors
Refraction
Audiovisual Materials:
*Optional