Question

explain the term principal axis with respect to spherical mirrors​

Answer 1

Answer:

Principal axis is the straight line that joins the pole of the mirror to its center of curvature. Center of curvature with reference to a spherical mirror is the center of the sphere of which the mirror is part of.

Answer 2

Answer:

ᴀ ʟɪɴᴇ ᴘᴀssɪɴɢ ᴛʜʀᴏᴜɢʜ ᴛʜᴇ ᴄᴇɴᴛᴇʀ ᴏғ ᴛʜᴇ sᴜʀғᴀᴄᴇ ᴏғ ᴀ ʟᴇɴs ᴏʀ sᴘʜᴇʀɪᴄᴀʟ ᴍɪʀʀᴏʀ ᴀɴᴅ ᴛʜʀᴏᴜɢʜ ᴛʜᴇ ᴄᴇɴᴛᴇʀs ᴏғ ᴄᴜʀᴠᴀᴛᴜʀᴇ ᴏғ ᴀʟʟ sᴇɢᴍᴇɴᴛs ᴏғ ᴛʜᴇ ʟᴇɴs ᴏʀ ᴍɪʀʀᴏʀ.