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प्रश्न
Light travels at a lower speed in water than in air.
पर्याय
True
False
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उत्तर
True.
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संबंधित प्रश्न
Which type of reflection of light leads to the formation of images?
A boy with a mouth 5 cm wide stands 2 m away from a plane mirror. Where is his image and how wide is the image of his mouth?
With the help of a labelled ray-diagram, describe how a plane mirror forms an image of a point source of light placed in front of it. State the characteristics of the image formed in a plane mirror.
The figure given alongside shows the image of a clock as seen in a plane mirror. The correct time is:
An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the positions of the original and final images seen in the mirror is ______.
Which phenomenon of light makes the water to appear shallower than it really is?
The depth of a pond when seen from above appears to be less.
We can see the sun even when it is little below the horizon because of ______.
Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 108 m s−1.
Under what circumstances there won’t be any refraction of light when it enters from one medium to another?
