The absolute refractive indices of water and glass are 4/3 and 3/2 respectively. What is ratio of
speed of light in water and glass?
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Answer:
Pulley is used to change the direction of a rope or a chain. The actual rotation of the pulley wheel is a side effect. Wheel and axle are used to amplify rotational force. The force can be provided through a rope wrapped around the wheel, but the change of direction is a side effect.
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Answer:
Hence, the speed of light in water is 2.25 × 10⁸ m/s.
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