Question

what is meant by sign convention. why they are used plz explain in easy language

Answer 1

1.all distances should be measured from pole 2.the distance is measured in the direction of incident light to be taken positive in those measured in the direction of direction opposite to be taken negative 3.height of object (ho) and height of image (h1) are positive is measured upwards from the axis and negative if measured downwards

Answer 2

Answer:

In physics, a sign convention is a choice of the physical significance of signs (plus or minus) for a set of quantities, in a case where the choice of sign is arbitrary. ... Sometimes, the term "sign convention" is used more broadly to include factors of i and 2π, rather than just choices of sign.

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