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प्रश्न
When light travels from a denser to a rarer medium, its speed ______.
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उत्तर
When light travels from a denser to a rarer medium, its speed increases.
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संबंधित प्रश्न
Write true or false of the following statement.
The speed of light in vacuum is 3 × 108 ms-1.
State whether light slows down or speeds up in the following cases :
Light going from glass to water.
A light ray passes from water to
- air, and
- glass.
In each case, state how does the speed of light change.
Numerical problem.
Light enters from air into a glass plate having refractive index 1.5. What is the speed of light in glass? (Ans: 2 × 108 ms–1)
Higher Order Thinking Skill.
What do you conclude about the speed of light in diamond. if the refractive index of diamond is 2.41?
Materials that allow light to pass through completely are known as ______ material.
Define transparent materials.
Light is one of the slowest traveling energy with a speed of 3 × 10-8ms-1
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.
