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प्रश्न
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?
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उत्तर
An image is formed due to the reflection of light by a plane mirror. In a completely dark room, there is no light present in the room. Thus, no reflection of light takes place by the mirror placed in the room. Hence, no image will get formed by a mirror in a completely dark room.
संबंधित प्रश्न
Fill in the blank
A plane mirror _________ reflects 100 percent light falling on it.
State which surface of a plane mirror reflects most of the light incident on it: the front smooth surface or the back silvered surface.
Differentiate between the reflection of light from a plane mirror and that from a plane sheet of paper.
A light ray is incident normally on a plane mirror. What is the direction of reflected ray? Show it on a diagram.
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.
Give two uses of convex mirror.
An object OA is placed on the principal axis of a concave mirror as shown in the figure. Copy and complete the diagram to show the formation of image.
Say TRUE or FALSE
We see planets because they reflect light from the sun
State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.
