The Speed of Light Generally Decreases When It Passes Through $\times$

question 30

Multiple Choice

The speed of light generally decreases when it passes through media other than a vacuum.The speed,v,is approximately c (2.998 $\times$ 10⁸m/s) divided by a quantity called the medium's refractive index, $\eta$ .In which of the following would the frequency of 193 nm light be the lowest? ( $v$ = c/ $\eta$ ; c = $\lambda$$v$ )

• A)hydrogen,\(\eta\) = 1.0001
• B)carbon tetrachloride,\(\eta\) = 1.461
• C)silicone oil,\(\eta\) = 1.520
• D)water,\(\eta\) = 1.3330
• E)diamond,\(\eta\) = 2.419

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Definitions:

Hallucinations

Perceptual experiences that occur without an external stimulus, vivid and clear, with the full force of real perceptions but not based in reality.

Obsessions

Persistent, involuntary thoughts, images, or impulses that cause significant anxiety or discomfort.

Delusions

False beliefs held with strong conviction, despite superior evidence to the contrary, often found in psychiatric conditions.

Compulsions

Repetitive behaviors or mental acts that an individual feels driven to perform in response to an obsession or according to rigid rules.