Question

why does convex mirror said to have a virtual principal focus ?​

Answer 1

Answer:

Convex mirrors always form virtual images because the focal point and the centre of curvature of the convex mirror are imaginary points and that cannot be reached. So the image is formed inside the mirror and cannot be projected on a screen.

Explanation:

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Answer 2

Answer:

ɪɴ ᴀ ᴄᴏɴᴠᴇx ᴍɪʀʀᴏʀ, ᴛʜᴇ ʀᴇғʟᴇᴄᴛᴇᴅ ʀᴀʏs ᴅᴏ ɴᴏᴛ ᴀᴄᴛᴜᴀʟʟʏ ᴘᴀss ᴛʜʀᴏᴜɢʜ ᴛʜᴇ ғᴏᴄᴜs (ғ). sᴏ , ᴀ ᴄᴏɴᴠᴇx ᴍɪʀʀᴏʀ ʜᴀs ᴀ ᴠɪʀᴛᴜᴀʟ ᴘʀɪɴᴄɪᴘᴀʟ ғᴏᴄᴜs, ᴡʜɪᴄʜ ɪs sɪᴛᴜᴀᴛᴇᴅ ʙᴇʜɪɴᴅ ᴛʜᴇ ᴍɪʀʀᴏʀ.