Golshani (ag5873) – Homework 01 – Yao – (57045)
1
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001
10.0 points
The reflecting surfaces of two intersecting flat
mirrors are at an angle of 62
◦
, as shown in
the figure. A light ray strikes the horizontal
mirror at an angle of 49
◦
with respect to the
mirror’s surface.
62
◦
49
◦
φ
Figure is not drawn to scale.
Calculate the angle
φ
.
Answer in units of
◦
.
002
10.0 points
Consider a light ray which enters from air to
a liquid, where the index of refraction of the
liquid is given by
n
=
√
2.
n
= 1
n
=
√
2
Air
Liquid
light
ray
Denote the wavelength and the frequency
in the liquid by
λ
′
and
f
′
and those in the air
by
λ
and
f
. Choose the correct pair of ratios:
1.
λ
′
λ
= 2
,
f
′
f
= 1
2.
λ
′
λ
=
1
√
2
,
f
′
f
=
√
2
3.
λ
′
λ
=
1
2
,
f
′
f
= 1
4.
λ
′
λ
=
1
2
,
f
′
f
=
√
2
5.
λ
′
λ
=
√
2
,
f
′
f
=
√
2
6.
λ
′
λ
= 1
,
f
′
f
=
√
2
7.
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- Fall '10
- YAO
- Snell's Law, Total internal reflection, light ray, Aquarium Spectrum
-
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