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प्रश्न
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5.
The refractive index of glass is 1.5. Calculate the speed of light in glass. The speed of light in air is 3 × 108 m s-1.
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उत्तर
Given:
Speed of light in air (c) = 3 × 108 m/s-1
Refractive index of glass (μ) = 1.5
Speed of light in glass, v = ?
Formula:
`c/v=μ`
`v=(3xx10^8"m/s")/1.5`
v = 2 × 108 m/s
संबंधित प्रश्न
Select the correct alternative
The speed of light is maximum in
A light ray passes from water to
- air, and
- glass.
In each case, state how does the speed of light change.
The speed of light is maximum in ______.
What is the speed of light in vacuum?
Higher Order Thinking Skills.
Light ray emerges from water into air. Draw a ray diagram indicating the change in its path in water.
Light travels ______ kilometers per second in air or vacuum. In theory, nothing can travel faster than light.
Define opaque material.
The speed of light decreases in a denser medium, light bends towards the normal.
Higher-Order Thinking Skills:
M = 2.42 for diamond. What is the meaning of this statement in relation to the speed of light?
Light travels a distance of '10x' units in time 't1' in vacuum and it travels a distance of 'x' units in time 't2' in a denser medium. Using this information answer the question that follows:
'Light covers a distance of '20x' units in time 't1' in diamond'. State true or false.
