Figures a and b below show the superposition of : • the waves E, and E, both propagating along the x-direction. • the waves Ez and E4. both propagating along the x-direction. E1 20 10 Figure a x(m) -10 -20 2 6 10 12 14 E3 20 10 Figure b 0- x(m) -10 - -20 2 6 8 10 12 14 For each part of the below question, choose one correct answer from the multiple choices. a) E, and Ez are: Oin phase Oout of phase Osuperposing destructively ONone of the above b) Eg and E, are: Oout of phase Oin phase
Figures a and b below show the superposition of : • the waves E, and E, both propagating along the x-direction. • the waves Ez and E4. both propagating along the x-direction. E1 20 10 Figure a x(m) -10 -20 2 6 10 12 14 E3 20 10 Figure b 0- x(m) -10 - -20 2 6 8 10 12 14 For each part of the below question, choose one correct answer from the multiple choices. a) E, and Ez are: Oin phase Oout of phase Osuperposing destructively ONone of the above b) Eg and E, are: Oout of phase Oin phase
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Transcribed Image Text:Figures a and b below show the superposition of :
the waves E, and E2, both propagating along the x-direction.
• the waves Ez and E4, both propagating along the x-direction.
E1
20 -
10 -
Figure a
Ez
x(m)
-10
-20 -
2
8
10
12
14
20
E3
10
Figure b
x(m)
-10 -
-20 -
2
4
6
8
10
12
14
For each part of the below question, choose one correct answer from the multiple choices.
а)
E, and Ez are:
Oin phase
Oout of phase
Osuperposing destructively
ONone of the above
b)
Ez and E, are:
Oout of phase
Oin phase
Osuperposing constructively
ONone of the above
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近
Transcribed Image Text:For the parts of the below question, fill in the empty boxes with your answer (YOUR ANSWER MUST BE ONLY A NUMBER; DO NOT WRITE UNITS; DO NOT WRITE LETTERS).
A thin biconvex lens made of heavy flint glass (n= 1.89) has a focal length in air of 60 cm. The radius of curvature of the first surface is twice the second surface's radius.
a)
| What is the sign of the radius of the first surface?
Choose one;
Opositive
Onegative
b)i
What is the sign of the radius of the second surface?
Choose one:
Opositive
Onegative
c)
Calculate the radius of curvature of the first surface R.
R1 =
cm
d) I-
If R1 = 208. 3 cm, R2 = 104.1 cm, n = 1.89, calculate the new focal length in air of this lens, fnew.
fnew =
If the lens is now immersed in a medium that has an index of refraction of 1.575, calculate the focal length in the medium fmedium (use R, = 208. 3 cm, R2 = 104. 1
e) [
cm and n = 1.89).
fmedium
cm
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