When Certain Light Rays Pass from a Vacuum into a Block

question 59

Multiple Choice

When certain light rays pass from a vacuum into a block of an unknown material,the measured index of refraction of the material is 3.00.What is the speed of light inside the block?

• A)9.9 × 10⁶ m/s
• B)4.8 × 10⁷ m/s
• C)1.0 × 10⁸ m/s
• D)1.9 × 10⁸ m/s
• E)2.9 × 10⁸ m/s

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