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प्रश्न
उत्तर
Three distinctions between light and sound waves are
(a). Light waves can travel through a vacuum while sound waves cannot.
(b). Light waves are transverse waves while sound waves are longitudinal waves.
(c). The velocity of light in air is 3 x 108 m/s while the speed of light in air is just about 330 m/s.
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संबंधित प्रश्न
David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1 m towards the mirror, then the distance between David and his image will be ______.
Select the correct alternative
The property due to which a light ray striking a surface is returned back into the same medium is called
What is meant by lateral inversion of an image in a plane mirror ? Explain it with the help of a diagram.
State two uses of a plane mirror.
Why do automobile drivers prefer convex mirror as a rear vew mirror? Illustrate your answer.
State whether the following statement is true or false. If false, correct it.
The image in a plane mirror is situated in the mirror.
In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
Which of the following ray diagrams is correct for the ray of light incident on a lens shown in figure?
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 |
| A | B |
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| C | D |
Which material is transparent?
What is Translucent objects? Give an example.
