Question

what is exactly sign convention

Answer 1

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.

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Answer 2

SIGN CONVENTION EXACTLY MEANS A CHOICE OF PHYSICAL SIGNIFICANCE OF SIGNS( PLUS OR MINUS) FOR A SET OF QUANTITIES, IN A CASE WHERE THE CHOICE OF SIGN IS ARBITRARY. HOPE I helped u.. PLZ MARK as the BRAINLIEST answer.. :-) ☺