Concept explainers
(a)
The time at which the light arrives at
(a)
Answer to Problem 84CP
The time at which the light arrives at
Explanation of Solution
Write the expression to obtain the
Here,
Write the expression to obtain the speed of light in medium
Here,
Write the expression to obtain the time when light arrive at point
Here,
Substitute
The light ray path in two mediums is as shown in the figure below.
Figure-(1)
Write the expression to obtain the value of
Here,
Write the expression to obtain the value of
Here,
Substitute
Therefore, the time at which the light arrives at
(b)
The result is
(b)
Answer to Problem 84CP
The result is
Explanation of Solution
Consider the equation (II).
Differentiate the above equation with respect to
Substitute
Therefore, the result is
(c)
The expression of Snell’s law is given as
(c)
Answer to Problem 84CP
The expression of Snell’s law is given as
Explanation of Solution
Write the expression to obtain the value of
Write the expression to obtain the value of
Substitute
Therefore, the expression of Snell’s law is given as
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Chapter 35 Solutions
Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
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