A Beam of Light Traveling in Air Strikes a Slab

question 14

Multiple Choice

A beam of light traveling in air strikes a slab of transparent material.The incident beam makes an angle of 40° with the normal,and the refracted beam make an angle of 26° with the normal.What is the speed of light in the transparent material? (c = 3.0 × 10⁸ m/s)

• A)1.0 × 10⁸ m/s
• B)2.0 × 10⁸ m/s
• C)2.3 × 10⁸ m/s
• D)3.0 × 10⁸ m/s
• E)0.50 × 10⁸ m/s

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