Question

What sign convention is used for sign convention????

Answer 1

In physics, a sign convention is a choice of the physical significance ofsigns (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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Answer 2

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Sign convention

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$\Large\bold\star\underline{\underline\textbf{Sign Conventions\:}}$


→ All the distances are measured from the pole of the surface.

→ The distances measured in the direction of incident light are taken as positive.

→ The distances measured in the direction opposite to the direction of incident light are taken as negative.

→ The perpendicular distances upwards to the principal axis are taken as positive and that in down ward direction are taken as negative.


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$\Large\bold\star\underline{\underline\textbf{Assumption\:}}$

→ Object is taken as point object lying on the principal axis.

→ The aperture of refracting surface is small.

→ The incident ray strikes the surface at a point very close to point, so the angle of incidence and refraction is very small.





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Hope it helped u.

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