Question

B) A student conducted experiment with biconvex lens and prepared the following table. Object distance(in cm) 70 60 50 40 30 Image distance(in cm) 14.5 15.2 16.2 17 20 Focal length(in cm) 12.01|12.12 12.13 11.92 12 i) What is the reason you think for different values of focal length in the above table? ii) How do you decide the focal length of the above lens? iii) Can you conduct an experiment to measure the image distance when the object distance is made 10cm? Why? iv) What is the relation between 'u', 'y' and "f?​

Answer 1

Answer:

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