Question

for student a b c and d did their experiment of finding the focal length of a convex lens by obtaining the image of a distant object as follows student age use the window grill in the Liberty as a object and white paper sheet had in a hand as a screen student be used a distant tree in the shade and white thick held in the hand as screen student she used a well irrigation levity window grill as a window and white paper sheet which is standing on the screen student be used as well levitate objects Test 3 as the object and welfare board help in the standing on the screen which student has used the correct method for preparation experiment of observe setup

Answer 1

b) no answer palce thanks