Question

(31.)Explain with the help of a labelled ray diagram, why a pencil partly immersed in water appears to be bent
at the water surface. State whether the bending of pencil will increase or decrease if water is replaced by
another liquid which is optically more dense than water. Give reason for your answer.​

Answer 1

ᴀ ᴩᴇɴᴄɪʟ ᴩʟᴀᴄᴇᴅ ɪɴ ᴡᴀᴛᴇʀ ᴀᴩᴩᴇᴀʀꜱ ᴛᴏ ʙᴇ ʙᴇɴᴛ because of refraction of light. The refraction causes an apparent shift in the position of the part of the pencil within the ᴡᴀᴛᴇʀ......

ɪꜰ ᴡᴀᴛᴇʀ ɪꜱ ʀᴇᴩʟᴀᴄᴇᴅ ʙy ᴀɴᴏᴛʜᴇʀ ʟɪqᴜɪᴅ ᴡʜɪᴄʜ ɪꜱ ᴏᴩᴛɪᴄᴀʟʟy ᴍᴏʀᴇ ᴅᴇɴꜱᴇ than water, then the bending of the pencil will increase. This is because the optically denser medium will cause more refraction of light ʀᴀyꜱ

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Answer 2

Answer:

Explanation:Because the light coming from air to water so light speed is more in air and less in water so light bend away the normal .