Question

what is a importance of sign convention of lenses​

Answer 1

Answer:

Sign convention - definition

Sign convention is a set of rules to set signs for image distance, object distance, focal length, etc for mathematical analysis of image formation. According to it: Object is always placed to the left of lens. All distances are measured from the optical centre of the mirror.

I think This is Answer. Not Sure

Answer 2

Answer:

here is your answer dude...

Explanation:

Sign convention - definition

Sign convention is a set of rules to set signs for image distance, object distance, focal length, etc for mathematical analysis of image formation. According to it: Object is always placed to the left of lens. All distances are measured from the optical centre of the mirror.

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