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प्रश्न
The speed of light is maximum in ______.
पर्याय
vacuum
glass
diamond
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उत्तर
The speed of light is maximum in vacuum
APPEARS IN
संबंधित प्रश्न
State whether light slows down or speeds up in the following cases :
Light going from air to glass.
A light ray passes from water to
- air, and
- glass.
In each case, state how does the speed of light change.
Compare the speeds of light of wavelength 4000 Å (i.e. violet light) and 8000 Å (i.e. red light) in vacuum.
What is the speed of light in vacuum?
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 Skills.
Light ray emerges from water into air. Draw a ray diagram indicating the change in its path in water.
Materials that allow light to pass through completely are known as transparent materials.
Define transparent materials.
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.
