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Physics 2 > Final Exam > Flashcards

Final Exam Flashcards

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1
Q

do electrons move in circular orbits with a non-fixed radii?

A

no

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2
Q

T/F: Radiation occurs when electrons jump from a lower to higher energy state

A

F

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3
Q

T/F: Radiation occurs when electrons jump from a higher to lower energy state

A

true

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4
Q

energy released from radiation is released as what

A

photon

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5
Q

is wavelength inversely proportional to mass

A

yes

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6
Q

the speed of proton A is larger than the speed of proton B. Which has the longer wavelength

A

proton B

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7
Q

an electron and a proton have the same speed. which has the longer wavelength

A

electron

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8
Q

an electron and a proton have the same momentum. Which has the longer wavelength

A

both are the same

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9
Q

can electrons act like particles and other times as waves?

A

yes

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10
Q

is an electron ejected if f<f(c)?

A

no

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11
Q

shorter wavelength = ___ frequency

A

higher

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12
Q

are electrons ejected if f > f(C)?

A

yes

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13
Q

are electrons ejected if lambda is greater than lambda (c)?

A

yes

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14
Q

higher frequency = __ energy/photon

A

higher

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15
Q

higher intensity with no frequency change, the energy/ photon will ___

A

stay the same

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16
Q

higher intensity will ___ # of photons

A

increase

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17
Q

if more than the minimum work function of a metal is supplied, the left over energy becomes ___ energy

A

kinetic

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18
Q

smallest binding energy = ___ Kinetic energy

A

maximum

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19
Q

electrons create current in the circuit which is registered in the ___

A

ammeter

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20
Q

energy is higher than binding energy, electron is ___

A

ejected

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21
Q

lower binding energy will be ejected with ___ Kinetic energy

A

highest

22
Q

does “radiation” = “a wave”

A

no

23
Q

momentum = ___ * ___

A

mass * velocity

24
Q

why can nothing be the speed of light

A

because nothing has infinite energy and no mass

25
Q

“closer to the gravitational field, time moves ___”

A

slower

26
Q

if two different observers measure the speed of light, will they get the same measurement

A

yes

27
Q

what is the speed of light in a vaccum

A

3.0*10^8 m/s

28
Q

is the speed of light independent of the motion of the source or receiver?

A

yes

29
Q

farsighted is corrected with what type of lens

A

converging

30
Q

formula used to calculated refractive power of a lens

A

1/f

31
Q

a virtual image is formed with concave/ __ lens

A

diverging

32
Q

do converging lens form virtual images?

A

yes

33
Q

with near point, if a specific number isn’t mentioned, what measurement do we assume?

A

25 cm

34
Q

convex lens have __ power with __ focal point

A

positive, real

35
Q

concave lens have __ power with ___ focal point

A

negative, no

36
Q

what angle of refraction makes the light disappear?

A

90

37
Q

constructive interfer have ___ fringe

A

bright

38
Q

destructive have __ fringe

A

dark

39
Q

what type of lens makes things look smaller than its original size?

A

convex/converging lens

40
Q

do convex lens form a smaller, virtual image

A

yes

41
Q

what lens forms a real object that’s larger than the original object?

A

converging

42
Q

diverging lens only form __ images

A

smaller

43
Q

converging lens can form real/ small/ __ images

A

larger

44
Q

T/F: an object is placed to the left of a converging lens. the image is always smaller or the same size as the object.

A

F

45
Q

T/F: an object is placed to the left of a converging lens. the image can be upright or inverted

A

T

46
Q

T/F: an object is placed to the left of a converging lens, the image is always to the right of the lens

A

F

47
Q

diverging lens have __ focal #

A

negative

48
Q

converging lens have __ focal #

A

positive

49
Q

a positive distance # means it is a ___ image

A

real

50
Q

a negative distance # means it is a ___ image

A

virtual

51
Q

convex lens are __ at the middle

A

thick

52
Q

concave lens are __ at the middle

A

thin

Physics 2 (2 decks)

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