Rashiqul Alam

in exp 2 we are provided with 2 convex lenses, a board with paper, a source of light (most probably the window in your centre) and a meter rule.... we will place the lens on the meter rule by a holder ( meter rule will be horizontal ) ... then after the ruler there will be a board on which image will be formed .. we have to move the board until a sharp image is seen.. following the measurements like focal length etc

in 1st experiment there will be a plastic box filled with water.. you will be provided with a wooden or plastic stick and masses... drop the stick in water and attach the slotted masses at one end of the stick.. then the stick will bend from one end .. record height of both ends from the bottom of the box and calculate angle of bending