Question

write Cartesian sign convention for spherical lenses
class 10 ​

Answer 1

Answer:

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This sign convention is known as New cartesian sign convention. Sign is taken as−(negative) from pole of a spherical mirror towards object along the principle axis.

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.