REFRACTION AT CONVEX LENS(P 34 01)Apparatus:GSN 246Adhesive magnetic board1POG 465Ray box, 6V 20W2POG 461Diaphragm 1 and 2 slits2POG 462Diaphragm 3 and 5 slits2POG 310.03Prism, right angle1POG 240.02Plan convex, lens model1Connecting lead4KAL 60/5APower supply1Draw the optical axis using whiteboard marker. Place the two ray box with five-slit diaphragm symmetrical to the optical axis behind the plan convex lens. The distance between the lamps and the plan convex lens is about ten centimeters. All parallel rays of light are deflected from their horizontal path.Mark the point where they intersect with the optical axis.
A convex lens collects light rays parallel to the axis at a focal spot. It is thus also termed a collecting or focusing lens.
Replace the two five-slit diaphragm by the one-slit diaphragm. Replace the lens by the prism right angle. By observing the refraction of light in an optical prism it may be understood why the plan convex lens collects light rays.REFRACTION AT CONCAVE LENS(P 34 02)Apparatus:GSN 246Adhesive magnetic...