Question

a pencil when dipped in a glass tumbler containing water appears to be bent at the interface of air and water . explain why?

Answer 1

Thats because of the refraction of water. Water has refraction or water produces refraction.

Answer 2

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Iғ ɪɴsᴛᴇᴀᴅ ᴏғ ᴡᴀᴛᴇʀ ᴡᴇ ᴜsᴇ ʟɪǫᴜɪᴅs ʟɪᴋᴇ, ᴋᴇʀᴏsᴇɴᴇ ᴏʀ ᴛᴜʀᴘᴇɴᴛɪɴᴇ, ᴛʜᴇ ᴘᴇɴᴄɪʟ ᴡɪʟʟ ᴀᴘᴘᴇᴀʀ ᴛᴏ ʙᴇ ʙᴇɴᴛ ᴛᴏ ᴀ ᴅɪғғᴇʀᴇɴᴛ ᴇxᴛᴇɴᴛ.

Tʜɪs ɪs ʙᴇᴄᴀᴜsᴇ ʙᴇɴᴅɪɴɢ ᴡɪʟʟ ʙᴇ ᴅɪғғᴇʀᴇɴᴛ ɪɴ ᴅɪғғᴇʀᴇɴᴛ ʟɪǫᴜɪᴅs sɪɴᴄᴇ ᴛʜᴇ ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ʟɪɢʜᴛ ᴀᴛ ᴛʜᴇ ɪɴᴛᴇʀғᴀᴄᴇ sᴇᴘᴀʀᴀᴛɪɴɢ ᴛᴡᴏ ᴍᴇᴅɪᴀ ᴅᴇᴘᴇɴᴅs ᴏɴ ᴛʜᴇ ʀᴇʟᴀᴛɪᴠᴇ ɪɴᴅᴇx ᴏғ ᴛʜᴇ ᴍᴇᴅɪᴜᴍ.

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