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प्रश्न
Write true or false of the following statement.
The speed of light in vacuum is 3 × 108 ms-1.
पर्याय
True
False
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उत्तर
True.
APPEARS IN
संबंधित प्रश्न
State whether light slows down or speeds up in the following cases :
Light going from glass to water.
An obliquely incident light ray bends at the surface due to a change in speed when passing from one medium to another. The ray does not bend when it is incident normally. Will the ray have a different speed in the other medium?
Compare the speeds of light of wavelength 4000 Å (i.e. violet light) and 8000 Å (i.e. red 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.
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.
Objects that allow light to pass through partially are called ______ material.
Define transparent materials.
Define opaque material.
Higher-Order Thinking Skills:
M = 2.42 for diamond. What is the meaning of this statement in relation to the speed of light?
