ALL THE FORMULAS Flashcards
1
Q
absolute refractive index formula
A
n = c/v
2
Q
Relative refractive index formula
A
nba = nb/na
absolute over an absolute
3
Q
Snell’s Law
A
na sin θa = nb sin θb
sin i sin r
3
Q
Thin Lens Equation:
A
1/f = 1/u + 1/v
f = focal length
4
Q
Refractive index with regard to perception of depth
A
real depth / apparent depth
5
Q
Magnification Equation
A
image size/object size
6
Q
vuat
A
v = u + at
7
Q
suvt
A
s = ½ (u + v) t
8
Q
sutat
A
s = ut + ½ at2
9
Q
svtat
A
s = vt - ½ at2
10
Q
vuas
A
v2 = u2 + 2as
11
Q
force formula
A
F =ma
force = mass x accel
11
Q
Work done formula
A
W = f x s
force x distance
11
Q
Efficiency
A
[(useful energy output) ÷ (energy input)] x 100%
12
Q
Power
A
P = w / t
(work done by force) ÷ (time taken)
Or
P = Fv
(Force) x (velocity)
