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प्रश्न
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उत्तर
Three characteristics of light are:-
(a). Light waves can travel through a vacuum.
(b). Light waves are transverse waves.
(c). The velocity of light in a vacuum is 3 x 108 m/s.
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संबंधित प्रश्न
Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room? Explain.
The diagram in Figure shows a point object P in front of a plane mirror MM1.
(a) Complete the diagram by taking two rays from the point P to show the formation of its image.
(b) In the diagram, mark the position of eye to see the image.
(c) Is the image formed real or virtual? Explain why?
Describe the principle of simple periscope through an outline ray diagram. Give one of its uses.
An object 1.5 cm high when placed in front of a concave. the mirror produces a virtual image 3 cm high. If the object is placed at a distance of 6 cm from the pole of the mirror, calculate:
- the position of the image
- the focal length of the mirror.
Copy the figure. By taking two rays from point A, show the formation of image. State four characteristics of the image.
State whether the following statement is true or false. If false, correct it.
The image formed in a plane mirror is the real, erect, and same size as that of the object.
When a ray of light strikes a plane mirror at an angle of 150 with the mirror, what will be the angle through which the ray will deviate? Illustrate with a ray diagram in the following figure.
The word PLATE written on a paper is held in front of a plane mirror. Write down the letters as seen in the following case.
The paper is held parallel to the mirror.
The light falling on the mirror is called as ______ and the light reflected is called reflected ray.
