light reflection and refraction - cdn1.byjus.com
TRANSCRIPT
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POST CLASS NOTES
Light – Reflection and Refraction
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Topics
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1. Reflection of Light
∠ ∠
∠ ∠
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2.Spherical Mirrors
FC CF
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PFC
ir
P CF
ir
PFC
ir
P CF
ir
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PFC P CF
PFC
ir P CF
ir
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3. Image Formation by Spherical Mirrors
PFC PFC
PFC PFC
PFC FC P
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P CF P CF
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4. Mirror Formula
→
→
→
m =h′
h= −
v
u
→
→
PB’X‘ XP
M
N
A’
1
v+1
u=1
f
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5. Refraction
Normal Incident ray
Refracted
ray
i
r
𝑠𝑖𝑛 𝑖
𝑠𝑖𝑛 𝑟= 𝑐𝑜𝑛𝑠𝑡𝑎𝑛𝑡
𝑛𝑚 =𝑐
𝑣𝑚𝑛21 =
𝑣1𝑣2
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6. Lenses
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C1 F1 F2 C2O C1 F1 F2 C2O
C1 F1 F2 C2 C1 F1 F2 C2
C1 F1 F2 C2 C1 F1 F2 C2
O O
OO
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7. Image Formation by Lenses
C1 F1 F2 C2O
C1 F1F2 C2O
C1 F1F2 C2O
C1 F1 F2
C2O
C1 F1F2 C2O C1 F1
F2 C2O
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8. Lens Formula and Magnification
9. Power of a Lens
P = P1 + P2 + P3 + ...
P =1
Focal length in metres , f
1
f
1u
1v
- =hi v
ho
=u
m =
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1
𝑣+1
𝑢=1
𝑓
𝑚 =ℎ′
ℎ= −
𝑣
𝑢
sin 𝑖
sin 𝑟= 𝑐𝑜𝑛𝑠𝑡𝑎𝑛𝑡
𝑛𝑚 =𝑐
𝑣𝑚
𝑛21 =𝑣1𝑣2
1
𝑣−1
𝑢=1
𝑓
𝑚 =ℎ′
ℎ=𝑣
𝑢
𝑃 =1
𝑓
Important Formulae
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∠i = ∠r
𝟏
𝒗+𝟏
𝒖=𝟏
𝒇
𝒎 =𝒉′
𝒉= −
𝒗
𝒖
𝐬𝐢𝐧 𝒊
𝐬𝐢𝐧 𝒓= 𝒄
𝒏𝒎 =𝒄
𝒗𝒎
𝒏𝟐𝟏 =𝒗𝟏𝒗𝟐
𝟏
𝒗−𝟏
𝒖=𝟏
𝒇
𝒎 =𝒉′
𝒉=𝒗
𝒖
𝑷 =𝟏
𝒇
Mind Map