Analyse the following observation table showing variation of image-distance with object-distance in case of convex lens and answer the question that follow without doing any calculation
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1.From the observation 3, we can say that Radius of curvature is 40cm so foal length of the convex lens is 20cm.[f=R/2]
2. Observation 6 is incorrect , as the object is in between P and F, the image formed will be virtual image on the same side of object, image distance should be negative.
3.Ray diagram for observation 3: Please refer attachment : object beyond C
4. magnification=m=v/um=30/-60=-1/2= -0.5so the image is real, inverted and diminished
Please find the question as an attachment. Hope so the solution helps you.
1.From the observation 3, we can say that Radius of curvature is 40cm so foal length of the convex lens is 20cm.[f=R/2]
2. Observation 6 is incorrect , as the object is in between P and F, the image formed will be virtual image on the same side of object, image distance should be negative.
3.Ray diagram for observation 3: Please refer attachment : object beyond C
4. magnification=m=v/um=30/-60=-1/2= -0.5so the image is real, inverted and diminished
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