Question

sign convention for image distance​

Answer 1

Answer:

Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. ... Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away.

Answer 2

Answer:

$\huge\boxed{\underline{\mathcal{\red{A} \green{N } \pink{S } \orange{W } \blue{E } \pink{R }}}}$

Sign is taken as + (positive) behind the spherical mirror. For example if an image is formed behind the mirror, the distance of image is taken as + (positive) from pole along the principal axis. The height of is taken as + (positive) above the principal axis and taken as – (negative) below the principal axis.