Question

give sign convention for spherical Mirrors

Answer 1

In this convention, the pole(P) is taken as the origin. The principal axis of the mirror is taken as the x-axis of the coordinate system. The convention are as follows:
(I) The object is always placed to the left of the mirror. This implies that the light from the object falls on the mirror from the left-hand side.
(II) All distances parallel to the principal axis are measured from the pole of the mirror.
(III) All the distances are measured to the right of the origin ( along + x-axis ) are taken as positive while those measured to the left of the origin ( along - x-axis ) are taken as negative.
(IV) Distances measured perpendicular to and above the principal axis ( along + y-axis ) are taken as positive.
(V) Distances measured perpendicular to and below the principal axis ( along - y-axis ) are taken as negative.



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Answer 2

$\huge\mathfrak\red{Heya\:Mate}$

$\huge\sf{Here\:is\:your\:Answer:-}$

Sign Convention for Reflaction by Spherical Mirrors use the pole of the mirror as Origin. The principal axis of the mirror is taken as the x-axis of the coordinate system.

$\underline{The\: convention \:are \:as\: follows:-}$

✔️ The object is always placed to the left of the mirror.

✔️ All distance parallel to the principal axis are measured from the pole of the mirror.

✔️ All the distance measured to the right of the orgin are taken as positive while those measured to the left of the origin is taken as negative.

✔️ Distances measured perpendicular to and above the principal axis are taken as positive.

✔️ Distance measured perpendicular to and below the principal axis are taken as negative.

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