Refraction Flashcards

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1
Q

n =

A

Real depth/apparent depth

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2
Q

Lateral shift =?

A

t = 1 - 1/n

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3
Q

Relationship between critical angle and n

A

n = 1/ sin c

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4
Q

Optical path?

A

Optical path is constant

nt = constant

Where t is the thickness of the medium

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5
Q

For spherical surface refraction formula?

A

n/v - 1/u = (n-1)/R
(Rarer to denser)

1/v - n/u = (1-n)/R
(Denser to rarer)

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6
Q

Lens formula

A

1/v - 1/u = 1/f

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7
Q

Lateral magnification

Object perpendicular to principal axis

A

m = v/u

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8
Q

Axial magnification

Object parallel to principal axis

A

m = (v/u)^2

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9
Q

Power of lens

A

P = 1/f

f should be in m

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10
Q

Lens makers formula

A

1/f = (n-1)(1/R -1/R’)

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11
Q

Combined focal length

A

1/F = 1/f + 1/f’ +……

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12
Q

Combined power

A

P = P + P’ +…..

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13
Q

Combined magnification

A

m = m x m’ x….

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14
Q

Combined focal length of the two lenses are separated by a distance d

A

1/F = 1/f + 1/f’ - d/ff’

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15
Q

Combined power if the two lens are separated by a distance d

A

P = P + P’ - PP’d

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