Good morning student, we will study today about the power lens, it is our last video of this chpater ( Light ) and this is our 14th lecture In this we will read about the power of the lens, it will read what is power of lens In this we will read what kind of lens will be fine when we combine two lenses So let’s start and do it and put our topic Power of the lens ok First of all lets see what wii be the definition of power So, Power of the lens is the measurment of degree of covergence or degree of divergence What does it mean that the power of the lens, what does it measure How to measure power of lens, we look at the degree of convergence of that lens, How much it converge the light rays falling on it Power of the lens is the measurment degree of convergence or degree of divergence of light rays falling on it