Question

please answer this question if you know the answer then only answer else reported​

Answer 1

The angle made by the normal will be 90 – 75 = 15. 

Angle made by normal is equal to angle of incidence.

So i = 15 degree.

ᴀɴᴅ ʙʏ ᴛʜᴇ ʟᴀᴡ ᴏғ ʀᴇғʟᴇᴄᴛɪᴏɴ ᴡʜɪᴄʜ sᴛᴀᴛᴇs ᴛʜᴀᴛ ᴀɴɢʟᴇ ᴏғ ɪɴᴄɪᴅᴇɴᴄᴇ ɪs ᴇϙᴜᴀʟ ᴛᴏ ᴛʜᴇ ᴀɴɢʟᴇ ᴏғ ʀᴇғʟᴇᴄᴛɪᴏɴ, ᴛʜᴇ ᴀɴɢʟᴇ ᴏғ ʀᴇғʟᴇᴄᴛɪᴏɴ ᴡɪʟʟ ʙᴇ 15 ᴅᴇɢʀᴇᴇ.

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