Light – Reflection by Plane Mirror

1. A plane mirror is a flat reflective surface.  A plane mirror is represented like this: –
Plane Mirror_full-01
2. Laws of Reflection:

(i) The angle of incidence is equal to the angle of reflection, and

(ii) The incident ray, the normal to the mirror at the point of incidence and the reflected ray, all lie in the same plane.

3. A plane mirror forms a laterally inverted, virtual image as far behind a mirror as the object is in front of the mirror.

4. There are two kinds of images formed by mirrors of objects placed before them namely ‘REAL IMAGE’ and ‘VIRTUAL IMAGE’.

5. Real Image is those images, where the rays of light after reflection actually meet to form an image. [figure]
Betwen C and F-01
6. Virtual Image is those images, where the rays of light appear to meet after reflection to form an image.

Between Pole and Focus-01

7. A laterally inverted image occurs in case of a reflected image. Its applicable for all kinds of mirror. To get an idea what laterally inverted image, check out how the alphabets of the English language look in a mirror:

Alphabets Mirror images

8. Reflection is an optical phenomenon where the direction of rays of light are reversed when they come in touch with the surface of any mirror. Reflection occurs at the surface of a mirror.

9. Let draw a ray diagram showing reflection by a plane mirror.
Plane Mirror_Image formation-01
10. The image formed by a plane mirror is as much behind a plane mirror as the object is front of the mirror. Therefore, if you are near a mirror, the image appears to be large, as the image is, just behind the mirror. If you move away from the mirror, the image also moves farther away. The image gets smaller.

Download the complete NOTES in PDF———->  Here are the complete notes on reflection by Plane Mirror.

Check out the complete list of TOPICS in the ‘LIST’

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