Question

a) A symmetric converging lens is used in an experiment and the observations are tabulated.
Object distance
Image distance
10 cm
30 cm
20 cm
60 cm
30 cm
30 cm
60 cm
20 cm
45 cm
22.5 cm
Now answer the questions based on data in table given above
i) What is the radius of curvature of the lens ?
ii) Object distance 20 cm, and image distance is 60 cm. Find focal length.
iii) What is the object distance when a virtual image is formed at a distance of 30 cm?
iv) For what distance of object, image is formed at infinite distance ?​

Answer 1

Answer:

this is maths subject question