CBSE Class 10 Science 2020 · Paper 31/C/2 · Question 22
State the laws of reflection of light. List four characteristics of the images formed by plane mirrors.
Answer
The angle of incidence equals the angle of reflection; the plane-mirror image is virtual, erect, the same size and laterally inverted.
Laws of reflection: (i) The angle of incidence is equal to the angle of reflection, . (ii) The incident ray, the normal to the mirror at the point of incidence and the reflected ray all lie in the same plane.
Characteristics of the image formed by a plane mirror (any four): it is virtual and cannot be obtained on a screen; it is erect; it is of the same size as the object; it is as far behind the mirror as the object is in front of it; it is laterally inverted.
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