Question: What is the Brewster\'s angle for light traveling from air (n1 = 1) to glass (n2 = 1.5)?
Options:
30 degrees
45 degrees
60 degrees
53 degrees
Correct Answer: 53 degrees
Solution:
Brewster\'s angle θ_B can be calculated using θ_B = arctan(n2/n1) = arctan(1.5) ≈ 56.31 degrees.
What is the Brewster's angle for light traveling from air (n1 = 1) to glass (n2
Practice Questions
Q1
What is the Brewster's angle for light traveling from air (n1 = 1) to glass (n2 = 1.5)?
30 degrees
45 degrees
60 degrees
53 degrees
Questions & Step-by-Step Solutions
What is the Brewster's angle for light traveling from air (n1 = 1) to glass (n2 = 1.5)?
Step 1: Identify the refractive indices. For air, n1 = 1 and for glass, n2 = 1.5.
Step 2: Use the formula for Brewster's angle: θ_B = arctan(n2/n1).
Step 3: Substitute the values into the formula: θ_B = arctan(1.5/1).
Step 4: Calculate the value: θ_B = arctan(1.5).
Step 5: Use a calculator or a table to find arctan(1.5), which is approximately 56.31 degrees.
Brewster's Angle – Brewster's angle is the angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface, with no reflection.
Refraction and Index of Refraction – Understanding the relationship between the indices of refraction of two media is crucial for calculating Brewster's angle.
Trigonometric Functions – The use of the arctangent function to find the angle based on the ratio of the indices of refraction.
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