Concept of mirrors and lenses

Concepts

For performing an experiment, a student was asked to choose one concave mirror and one convex lens from a lot of mirrors and lenses of different kinds. The correct procedure adopted by her will be :

Basic Concepts Of Mirror Images(दर्पण प्रतिबिम्ब की मूल अवधारणा)|Mirror Images Of Capital Letters(बड़े अक्षरो की दर्पण प्रतिबिम्ब)|Mirror Images Of Small Letters(छोटे अक्षरो की दर्पण प्रतिबिम्ब)|Mirror Images Of Numbers(संख्ययो की दर्पण प्रतिबिम्ब)|Questions(प्रश्न)|OMR

Concept of gram atom, Concept of gram mole and Concept of gram equivalent

Briefly explain the concept of heat and concept of temperature.

Examples on Lenses

Spherical lenses