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Q. |
The speed of light will be minimum while passing through - |
A. | water |
B. | vaccum |
C. | air |
D. | glass |
Answer» D. glass | |
Explanation: T Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive index = 1.3; see Figure 1) and 200,000 kilometers per second in glass (refractive index of 1.5). |
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