Q1. Define regular reflection. (1)
Q2. Define Convex lens. (1)
Q3. What is light? (1)
Q4. What is dispersion og light? (1)
Q5. Define reflection of light. Write the two laws of it. (
Answers
Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface.
This type of lens is thicker at the center and thinner at the edges. An optical lens is generally made up of two spherical surfaces. If those surfaces are bent outwards, the lens is called a biconvex lens or simply convex lens.
Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye.
In optics, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency.
There are two laws of reflection : 1) Angle of incidence is always equal to angle of reflection , i.e., ∠i=∠r. 2) The incident ray, the reflected ray and the normal at the point of incidence, all lie in the same plane.
Answer:
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Explanation:
1..Rᴇɢᴜʟᴀʀ ʀᴇғʟᴇᴄᴛɪᴏɴ: Iᴛ ɪs ᴛʜᴇ ʀᴇғʟᴇᴄᴛɪᴏɴ ғʀᴏᴍ ᴀ sᴍᴏᴏᴛʜ sᴜʀғᴀᴄᴇ sᴜᴄʜ ᴛʜᴀᴛ ᴛʜᴇ ʟɪɢʜᴛ ʀᴀʏs ᴀʀᴇ ᴇᴠᴇɴʟʏ ᴘᴀʀᴀʟʟᴇʟ ᴛᴏ ᴇᴀᴄʜ ᴏᴛʜᴇʀ ᴀɴᴅ ᴀɴ ɪᴍᴀɢᴇ ɪs ғᴏʀᴍᴇᴅ. ...
2..ᴀ ʟᴇɴs ᴡʜɪᴄʜ ɪs ᴛʜɪɴɴᴇʀ ᴀᴛ ᴛʜᴇ ᴇᴅɢᴇs ᴀɴᴅ ᴛʜɪᴄᴋᴇʀ ᴀᴛ ᴛʜᴇ ᴄᴇɴᴛʀᴇ ɪs ᴋɴᴏᴡɴ ᴀs ᴄᴏɴᴠᴇx ʟᴇɴs. ɢᴇɴᴇʀᴀʟʟʏ ʟᴇɴsᴇs ᴀʀᴇ ᴍᴀᴅᴇ ᴜᴘ ᴏғ ɢʟᴀss ᴏʀ ᴛʀᴀɴsᴘᴀʀᴇɴᴛ ᴘʟᴀsᴛɪᴄ ᴀɴᴅ ᴛʜᴇ sᴀᴍᴇ ᴄᴀɴ ʙᴇ ᴜsᴇᴅ ғᴏʀ ᴛʀᴀɴsᴍɪᴛᴛɪɴɢ, ʀᴇғʀᴀᴄᴛɪɴɢ ᴏʀ ғᴏʀ ғᴏᴄᴜsɪɴɢ ᴛʜᴇ ʟɪɢʜᴛ.
3..ʟɪɢʜᴛ ɪs ᴀ ғᴏʀᴍ ᴏғ ᴇɴᴇʀɢʏ ᴡʜɪᴄʜ ᴘʀᴏᴠɪᴅᴇ ᴛʜᴇ sᴇɴsᴀᴛɪᴏɴ ᴏғ sɪɢʜᴛ ᴏʀ ᴠɪsɪᴏɴ...
4..ᴡʜᴇɴ ᴡʜɪᴛᴇ ʟɪɢʜᴛ ɪs ᴘᴀssᴇᴅ ᴛʜʀᴏᴜɢʜ ᴀ ɢʟᴀss ᴘʀɪsᴍ ɪᴛ sᴘʟɪᴛs ɪɴᴛᴏ ɪᴛs sᴘᴇᴄᴛʀᴜᴍ ᴏғ ᴄᴏʟᴏᴜʀs (ɪɴ ᴏʀᴅᴇʀ ᴠɪᴏʟᴇᴛ, ɪɴᴅɪɢᴏ, ʙʟᴜᴇ, ɢʀᴇᴇɴ, ʏᴇʟʟᴏᴡ, ᴏʀᴀɴɢᴇ ᴀɴᴅ ʀᴇᴅ) ᴀɴᴅ ᴛʜɪs ᴘʀᴏᴄᴇss ᴏғ ᴡʜɪᴛᴇ ʟɪɢʜᴛ sᴘʟɪᴛᴛɪɴɢ ɪɴᴛᴏ ɪᴛs ᴄᴏɴsᴛɪᴛᴜᴇɴᴛ ᴄᴏʟᴏᴜʀs ɪs ᴛᴇʀᴍᴇᴅ ᴀs ᴅɪsᴘᴇʀsɪᴏɴ.
5..ᴛʜᴇ ʙᴏᴜɴᴄɪɴɢ ʙᴀᴄᴋ ᴏғ ʟɪɢʜᴛ ғʀᴏᴍ ᴛʜᴇ sᴜʀғᴀᴄᴇ ɪs ᴋɴᴏᴡɴ ᴀs ʀᴇғʟᴇᴄᴛɪᴏɴ..ᴛʜᴇʀᴇ ᴀʀᴇ ᴛᴡᴏ ʟᴀᴡs ᴏғ ʀᴇғʟᴇᴄᴛɪᴏɴ : 1) ᴀɴɢʟᴇ ᴏғ ɪɴᴄɪᴅᴇɴᴄᴇ ɪs ᴀʟᴡᴀʏs ᴇϙᴜᴀʟ ᴛᴏ ᴀɴɢʟᴇ ᴏғ ʀᴇғʟᴇᴄᴛɪᴏɴ , ɪ.ᴇ., ∠ɪ=∠ʀ. 2) ᴛʜᴇ ɪɴᴄɪᴅᴇɴᴛ ʀᴀʏ, ᴛʜᴇ ʀᴇғʟᴇᴄᴛᴇᴅ ʀᴀʏ ᴀɴᴅ ᴛʜᴇ ɴᴏʀᴍᴀʟ ᴀᴛ ᴛʜᴇ ᴘᴏɪɴᴛ ᴏғ ɪɴᴄɪᴅᴇɴᴄᴇ, ᴀʟʟ ʟɪᴇ ɪɴ ᴛʜᴇ sᴀᴍᴇ ᴘʟᴀɴᴇ.