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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
Explain the following term:
Angle of reflection.
Draw diagram/diagrams to show them.
What type of mirror is used to obtain a real image-of an object?
How many images will be formed when an object is placed between two parallel plane mirrors with their reflecting surfaces facing each other? Why do more distant images appear fainter?
Identify the following kind of beam of light.
A boy is standing in front of a plane mirror at a distance of 3 m from it.
(i) What is the distance between the boy and his image?
(ii) If the boy moves 1 m backward, find the distance between the image and the boy.
What is Translucent objects? Give an example.
A light ray enters from medium A to medium B as shown in Figure 10.2. The refractive index of medium B relative to A will be
The image formed by a plane mirror is always as far behind the mirror as far the object lies in front of it.
