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Optics Variable Meanings
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Total cards: 21•Content version: v3•Public deck•Updated: 8/1/2026
Card preview (21)
#1
Front (Question)
O
Back (Answer)
Optical center
#2
Front (Question)
F
Back (Answer)
Principal focus
#3
Front (Question)
F’
Back (Answer)
Secondary focus
#4
Front (Question)
c (angle)
Back (Answer)
Critical angle
#5
Front (Question)
ni
Back (Answer)
Index of refraction for FIRST medium
#6
Front (Question)
sini
Back (Answer)
Sine of angle of incidence
#7
Front (Question)
nR
Back (Answer)
Index of refraction for SECOND medium
#8
Front (Question)
sinR
Back (Answer)
Sine of angle of refraction
#9
Front (Question)
n
Back (Answer)
Index of refraction
#10
Front (Question)
c
Back (Answer)
Speed of light in vacuum (3.00 • 10 (8) m/S)
#11
Front (Question)
v
Back (Answer)
Speed of light in medium
#12
Front (Question)
f
Back (Answer)
Focal length
#13
Front (Question)
di
Back (Answer)
Image distance from the mirror
#14
Front (Question)
do
Back (Answer)
Object distance to the mirror
#15
Front (Question)
m
Back (Answer)
Magnification
#16
Front (Question)
hi
Back (Answer)
Height of image
#17
Front (Question)
ho
Back (Answer)
Height of object
#18
Front (Question)
i
Back (Answer)
incidence ray
#19
Front (Question)
r
Back (Answer)
reflection ray
#20
Front (Question)
R
Back (Answer)
Angle of refraction ray
#21
Front (Question)
C
Back (Answer)
centre of curvature