Question

write two rules of the new cartesian sign convention for spherical mirrors.​

Answer 1

1-the object too and above the principal axis is taken as positive

2-the object too and below the principal axis is taken as negative

Answer 2

Answer:

1. Along the principal axis, the sign is regarded as (negative) from the pole of a spherical mirror towards the object. This indicates that in front of a spherical mirror, the sign is always regarded as (negative).

2. Behind the spherical mirror, the sign is taken as + (positive). For example, if an image is generated behind the mirror, the image's distance from the pole along the primary axis is considered as + (positive).

Hence the two rules of the new cartesian sign convention for spherical mirrors are above.

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