A Glass Block with an Index of Refraction of 1 $\ge$

question 49

Multiple Choice

A glass block with an index of refraction of 1.7 is immersed in an unknown liquid.A ray of light inside the block undergoes total internal reflection as shown in the figure.Which one of the following relations best indicates what may be concluded concerning the index of refraction of the liquid, n_L?

• A)n_L < 1.0
• B)n_L \(\ge\) 1.1
• C)n_L \(\ge\) 1.3
• D)n_L \(\le\) 1.1
• E)n_L \(\le\) 1.3

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Definitions:

Muscle Fiber

An individual muscle cell, long and cylindrical in shape, that contracts to produce movement.

Myofibrils

Rod-like units of a muscle fiber that are essential for muscle contraction, composed of sarcomeres.

Motor Units

Functional units of a muscle that consist of a motor neuron and all the muscle fibers it innervates.

Gastrocnemius Muscles

A major calf muscle that is involved in walking, running, and jumping by flexing the foot at the ankle.