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AS PHYSICS > E,W&P 3 > Flashcards

E,W&P 3 Flashcards

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1
Q

PHOTOELECTRIC EFFECT

A

the emission of electrons from the surface of material when electromagnetic radiation is incident on the surface

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2
Q

PHOTON

A

a quantum/particle of light

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3
Q

PLANCK CONSTANT (h)

A

6.63 x 10-34

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4
Q

PLANE POLARISED WAVE

A

a transverse wave oscillating in only one plane

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5
Q

POLARISATION

A

the process of turning an unpolarised wave into a plane polarised wave

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6
Q

POTENTIAL DIFFERENCE

A

the electrical energy transferred per unit chage when electrical energy is converted into some other form of energy

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7
Q

POTENTIAL DIVIDER

A

a type of circuit containing two components designed to divide up the p.d in proportion to the resistances of the components

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8
Q

POTENTIAL ENERGY

A

a form of stored energy

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9
Q

PROGRESSIVE WAVE

A

a wave that travels from one place to another

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10
Q

QUANTUM

A

a discrete, indivisible quantity

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11
Q

RADIAN

A

unit of angle or phase difference

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12
Q

REFLECTION

A

when waves rebound from a barrier changing direction but remaining in the same medium

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13
Q

REFRACTION

A

when waves change direction when they travel from one medium to another due to a difference in the wave speed in each medium

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14
Q

RESISTANCE (R)

A

a property of a component that regulates the electric current through it (ohms)

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15
Q

SEMICONDUCTOR

A

material with lower number density of conduction electrons and higher resistance than a conductor

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16
Q

SPECTRAL LINE

A

line relating to a specific frequency either missing from an absorption spectrum of present in an emission spectrum

17
Q

SPECTRUM

A

a collection of waves with a range of frequencies eg visible spectrum

18
Q

STANDING/STATIONARY WAVE

A

wave formed by the interference of two waves travelling in opposite directions

19
Q

PRINCIPLE OF SUPERPOSITION

A

that when two or more waves of the same type exist at the same place, the resultant wave will be found by adding the displacements of each individual wave

AS PHYSICS (6 decks)

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