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प्रश्न
How will you explain the statement 'we cannot see the objects in a dark room'?
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उत्तर
Light enables us to see objects around us. We see an object when light falls on it and gets reflected from its surface and enters our eyes. In a dark room, there is no source of light. Thus, no light falls on the surface of objects, and hence we do not see them. This is why we cannot see the objects in a dark room.
संबंधित प्रश्न
With the help of diagrams, explain the difference between the regular and irregular reflection.
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?
State four uses of a plane mirror.
Draw a neat two ray diagram to illustrate how a concave mirror is used as a shaving mirror.
Complete the ray diagram to show the image observed by the eye after reflection in the following figure.

Locate the image termed when the object is placed between two planes as shown in the following figure.

Say TRUE or FALSE
We see planets because they reflect light from the sun
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?
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

