card 5 Flashcards

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1
Q

Definition and formula of the critical angle

A

The critical angle occurs when the angle of incidence where the angle of refraction is
90 degree.

θc=sin-1(n2/ n1)

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2
Q

Definition and formula ofoptical density substances

A

D=log(i/T)=log(i0/i)

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3
Q

lens maker formula

A

1/f=(nl-nm)(1/R1 + 1/R2)

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4
Q

Why can light be selectively absorbed when it pass through any colored liquid?

A

Selected absorbed frequency at the light wave matches the frequency at which electron in the atoms of material vibrate

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5
Q

Give definition of dispersion of light. Which dispersion is called normal dispersion?

A

Dispersion is light separate into its component colours.
Which the separation of components in one spectrum increases continuously and almost uniformly with the wavelength

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6
Q

Definition of refraction of light.

A

Bending of light as it passes through transparent substances into another

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7
Q

Give definition of polarized light. Which ways of light polarization do you know?

A

A light wave which vibration occurs in a single plane.
1) absorption (dichroic material)
2) double refraction (birefringent crystal)
3) reflection (specular reflection)

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