1. i) Define Light energy. What are meant by Ray of light and beam of light
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Explanation:
The light traveling in any one direction in a straight line is called a ray of light. A group of light rays given out from a source is called a beam of light
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Rᴀʏ ᴏғ ʟɪɢʜᴛ: Tʜᴇ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏʀ ᴘᴀᴛʜ ᴀʟᴏɴɢ ᴡʜɪᴄʜ ʟɪɢʜᴛ ᴇɴᴇʀɢʏ ᴛʀᴀᴠᴇʟs ɪɴ ᴀ ᴍᴇᴅɪᴜᴍ ɪs ᴄᴀʟʟᴇᴅ ᴀ ʀᴀʏ ᴏғ ʟɪɢʜᴛ. Iᴛ ɪs ʀᴇᴘʀᴇsᴇɴᴛᴇᴅ ʙʏ ᴀ sᴛʀᴀɪɢʜᴛ ʟɪɴᴇ ᴡɪᴛʜ ᴀɴ ᴀʀʀᴏᴡ ᴍᴀʀᴋᴇᴅ ᴏɴ ɪᴛ. Bᴇᴀᴍ ᴏғ ʟɪɢʜᴛ: A ɢʀᴏᴜᴘ ᴏғ ʟɪɢʜᴛ ʀᴀʏs ɪs ᴄᴀʟʟᴇᴅ ᴀ ʙᴇᴀᴍ ᴏғ ʟɪɢʜᴛ. ... Iɴ ᴀ ᴅɪᴠᴇʀɢᴇɴᴛ ʙᴇᴀᴍ, ᴛʜᴇ ʀᴀʏs ᴘʀᴏᴄᴇᴇᴅ ᴀᴡᴀʏ ғʀᴏᴍ ᴀ ᴘᴏɪɴᴛ
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