Question

according to cartesian sign conventions​

Answer 1

Answer:

The Cartesian convention emphasizes the point of view which looks at a lens as changing . The sign is taken as positive for a real object or image distance. ... In that convention the positive direction for a quantity is always in the direction that light is traveling.

Explanation:

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Answer 2

Hi friend_______,

Cartesian sign conventions are used for measuring the various distances in the ray diagrams of spherical lenses. According to Cartesian convention:

★ The object is always placed on the left side of the lens.

★ All the distances are measured from the optical centre of the lens.

★ The distances measured in the same direction as that of incident light are taken as positive.

★ The distances measured against the direction of incident light are taken as negative.

★ The distances measured upward and perpendicular to the principal axis is taken as positive.

★ The distances measured downward and perpendicular to the principal axis is taken as negative.