Question

define the following terms
(a). spherical lens
(b). reflection of light

Answer 1

ᴀ)sᴘʜᴇʀɪᴄᴀʟ ʟᴇɴsᴇs, ᴀʟsᴏ ᴋɴᴏᴡɴ ᴀs sɪɴɢʟᴇᴛs, ᴀʀᴇ ᴏᴘᴛɪᴄᴀʟ ʟᴇɴsᴇs ᴡɪᴛʜ ᴄᴜʀᴠᴇᴅ sᴜʀғᴀᴄᴇs ᴛʜᴀᴛ ᴄᴀᴜsᴇ ʟɪɢʜᴛ ʀᴀʏs ᴛᴏ ᴄᴏɴᴠᴇʀɢᴇ ᴏʀ ᴅɪᴠᴇʀɢᴇ. ᴛʜᴇʏ ᴀʀᴇ ᴡɪᴅᴇʟʏ ᴜsᴇᴅ ɪɴ ɪᴍᴀɢɪɴɢ ᴀᴘᴘʟɪᴄᴀᴛɪᴏɴs. ... ʙᴏᴛʜ ᴘʟᴀɴᴏ ᴄᴏɴᴠᴇx ᴀɴᴅ ᴅᴏᴜʙʟᴇ ᴄᴏɴᴠᴇx ʟᴇɴsᴇs ᴀʀᴇ ᴡʜᴀᴛ ᴡᴇ ᴄᴀʟʟ ᴘᴏsɪᴛɪᴠᴇ ʟᴇɴsᴇs; ᴛʜᴇʏ ʜᴀᴠᴇ ᴘᴏsɪᴛɪᴠᴇ ғᴏᴄᴀʟ ʟᴇɴɢᴛʜs.

ʙ) ʀᴇғʟᴇᴄᴛɪᴏɴ ɪs ᴡʜᴇɴ ʟɪɢʜᴛ ʙᴏᴜɴᴄᴇs ᴏғғ ᴀɴ ᴏʙᴊᴇᴄᴛ. ɪғ ᴛʜᴇ sᴜʀғᴀᴄᴇ ɪs sᴍᴏᴏᴛʜ ᴀɴᴅ sʜɪɴʏ, ʟɪᴋᴇ ɢʟᴀss, ᴡᴀᴛᴇʀ ᴏʀ ᴘᴏʟɪsʜᴇᴅ ᴍᴇᴛᴀʟ, ᴛʜᴇ ʟɪɢʜᴛ ᴡɪʟʟ ʀᴇғʟᴇᴄᴛ ᴀᴛ ᴛʜᴇ sᴀᴍᴇ ᴀɴɢʟᴇ ᴀs ɪᴛ ʜɪᴛ ᴛʜᴇ sᴜʀғᴀᴄᴇ. ... ғᴏʀ ᴀ sᴍᴏᴏᴛʜ sᴜʀғᴀᴄᴇ, ʀᴇғʟᴇᴄᴛᴇᴅ ʟɪɢʜᴛ ʀᴀʏs ᴛʀᴀᴠᴇʟ ɪɴ ᴛʜᴇ sᴀᴍᴇ ᴅɪʀᴇᴄᴛɪᴏɴ. ᴛʜɪs ɪs ᴄᴀʟʟᴇᴅ sᴘᴇᴄᴜʟᴀʀ ʀᴇғʟᴇᴄᴛɪᴏɴ.

Answer 2

Answer:

(a)Spherical lenses, also known as singlets, are optical lenses with curved surfaces that cause light rays to converge or diverge

(b)Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.

Explanation:

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