Question

at noon sun appears white but near the horizon​

Answer 1

Sunlight reaches Earth's atmosphere and is scattered in all directions by all he gases and particles in the air.

White light is scattered more than the other colours because it travels as shorter,smaller waves. This is why we see a white sky most of the time.

Answer 2

Answer:

sɪɴᴄᴇ ʟɪɢʜᴛ ᴄᴏᴍɪɴɢ ғʀᴏᴍ ᴛʜᴇ ᴏᴠᴇʀʜᴇᴀᴅ sᴜɴ ʜᴀs ᴀʟᴍᴏsᴛ ᴀʟʟ ɪᴛs ᴄᴏᴍᴘᴏɴᴇɴᴛ ᴄᴏʟᴏʀs ɪɴ ᴛʜᴇ ʀɪɢʜᴛ ᴘʀᴏᴘᴏʀᴛɪᴏɴ, ᴛʜᴇʀᴇғᴏʀᴇ ᴛʜᴇ sᴜɴ ɪɴ ᴛʜᴇ sᴋʏ ᴏᴠᴇʀʜᴇᴀᴅ ᴀᴘᴘᴇᴀʀs ᴡʜɪᴛᴇ ᴛᴏ ᴜs. ʙᴜᴛ ᴡʜᴇɴ ᴛʜᴇ sᴀᴍᴇ sᴜɴ ɪs ɴᴇᴀʀ ᴛʜᴇ ʜᴏʀɪᴢᴏɴ ᴀᴛ sᴜɴsᴇᴛ, ᴛʜᴇ sᴜɴʟɪɢʜᴛ ʜᴀs ᴛᴏ ᴛʀᴀᴠᴇʟ ᴛʜᴇ ɢʀᴇᴀᴛᴇsᴛ ᴅɪsᴛᴀɴᴄᴇ ᴛʜʀᴏᴜɢʜ ᴛʜᴇ ᴀᴛᴍᴏᴘʜᴇʀᴇ ᴛᴏ ʀᴇᴀᴄʜ ᴜs.