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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 air to glass.
A light ray passes from water to
- air, and
- glass.
In each case, state how does the speed of light change.
A light ray suffers reflection and refraction at the boundary in passing from air to water. Draw a neat labelled ray diagram to show it.
The speed of light is maximum in ______.
Materials that allow light to pass through completely are known as ______ material.
Objects that allow light to pass through partially are called ______ material.
Define opaque material.
Light is one of the slowest traveling energy with a speed of 3 × 10-8ms-1
Two medium with a refractive index of 1.31 & 1.50 is given. In which case
- The bending of light is more and
- speed of light is more.
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.
