January 2026
Intermediate
224 pages
7h 43m
English
Content preview from Nvision Foundation Physics Grade 8 2026
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CHAPTER 4: LIGHT, MIRRORS, AND LENSES
CHECK POINT 1
1. Laws of reflection are:
(i) Angle of Incidence is equal to the angle of reflection, i.e., ∠i = ∠r.
(ii) Incident ray, reflected ray and normal to the reflecting surface always lie in the same plane at the point of incidence.
2. Transparent Object: Bodies that allow light to pass through them i.e. transmit light through them, are called transparent bodies. Example: Glass, water, air etc.
Translucent Object: Bodies that can transmit only a part of light through them are called translucent objects. Example: Frosted or ground glass, greased paper, paraffin wax.
Opaque Object: Bodies that do not allow light to pass through them at all are said to be opaque object. Example: Chair, desk etc. ...
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