2. The following algebraic expressions :- x square-y square, 2x square- 3 xy 4y square,3y square-5xy-x square
2. The following algebraic expressions :- x square-y square, 2x square- 3 xy 4y square,3y square-5xy-x square
Draw the ray diagrams for convex lens when the object is kept at different places in front of a convex lens