Question

An object is 150mm to the left of a converging lens with a focal length f= 200mm. How far is the image from the lens? Answer: mm Which side of the lens is the image (right or left)? Answer: Is the image real or virtual? Answer: What is the magnification? Answer: Is the image upright or inverted? Answer:

Answer 1

O given focal length of converging rens f = 1200 mm The distance of object from lens do=+150 mm image (place left of lens) dor object indol ef I +1 f di mm let distance of the image from from lers = de we thin lens formula do d? § -á di = f do do di (2001(150) do-f 150 - 200 -600 (-ve sign implies that image will form as the same side as object plored) The image will form at distance dp = 600 mm from lets and same side of object og left side o As the image is some side of object so image will be vertucale • The magnification is m = - de do 150 m=+4.0 The magnifical is m = 4.0 The positive sign of in implies that image is upright. -(-600 = +4.0 6