Suppose the glass paperweight has index of refraction n=1.38. a) find the value of θ for which the reflection on the vertical surface of the paperweight exactly satisfies the condition for total internal reflection. b) if θ is increased, is the reflection at the vertical surface still total?
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Ответ:
a)θ=71.89°
b)NO
Explanation:
Given that
For glass n= 1.38
We know that for air n'=1
The angle for total internal reflection θc given as
sin θc=n'/n
By putting the values
sin θc=n'/n
sin θc=1/1.38
θc=46.43°
n'sinθ = n sinθref
sinθref = cosθc
n'sinθ = n cosθc
1 x sinθ =1.38 x cos 46.43°
θ=71.89°
b)
NO
Ответ:
mars has a relatively thin atmosphere
there is limited to no volcanic activity on mars.