Question

What sign conventions are used for
reflection from a spherical mirror?​

Answer 1

Answer:

Object is always placed to the left of mirror. All distances are measured from the pole of the mirror. Distances measured in the direction of the incident ray are positive and the distances measured in the direction opposite to that of the incident rays are negative.

Explanation:

hope it will help you

Answer 2

Answer:

ᴏʙᴊᴇᴄᴛ ɪs ᴀʟᴡᴀʏs ᴘʟᴀᴄᴇᴅ ᴛᴏ ᴛʜᴇ ʟᴇғᴛ ᴏғ ᴍɪʀʀᴏʀ. ᴀʟʟ ᴅɪsᴛᴀɴᴄᴇs ᴀʀᴇ ᴍᴇᴀsᴜʀᴇᴅ ғʀᴏᴍ ᴛʜᴇ ᴘᴏʟᴇ ᴏғ ᴛʜᴇ ᴍɪʀʀᴏʀ. ᴅɪsᴛᴀɴᴄᴇs ᴍᴇᴀsᴜʀᴇᴅ ɪɴ ᴛʜᴇ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏғ ᴛʜᴇ ɪɴᴄɪᴅᴇɴᴛ ʀᴀʏ ᴀʀᴇ ᴘᴏsɪᴛɪᴠᴇ ᴀɴᴅ ᴛʜᴇ ᴅɪsᴛᴀɴᴄᴇs ᴍᴇᴀsᴜʀᴇᴅ ɪɴ ᴛʜᴇ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏᴘᴘᴏsɪᴛᴇ ᴛᴏ ᴛʜᴀᴛ ᴏғ ᴛʜᴇ ɪɴᴄɪᴅᴇɴᴛ ʀᴀʏs ᴀʀᴇ ɴᴇɢᴀᴛɪᴠᴇ