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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
Select the correct alternative
The property due to which a light ray striking a surface is returned back into the same medium is called
How is the position of image formed by a plane mirror related to the position of the object ?
What do you mean by reflection of light?
Draw a diagram to show the reflection of a ray of light using a plane mirror. In the diagram, label the incident ray, the reflected ray, the normal, the angle of incidence and the angle of reflection.
A ray is incident on a plane mirror . Its reflected ray is perpandicular to the incident ray . Find the angle of incidence .
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.
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.
Dull materials reflect light.
