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Turning points AQA physics A-level Flashcards | StudBud
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Turning points AQA physics A-level
Turning points AQA physics A-level
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1
Stoke's Law
Ft = 6πrην
F = 6πrην
F = 6mrην
F = 6πρην
2
Constructive interference happens at a whole number of wavelengths
False
True
3
What are cathode ray particles?
muons
protons
electrons
positrons
4
what did newton's theory predict about the interference pattern formed in young's double slit?
no fringes formed
two bright frienges corresponding to the two slits
only one central bright maximum
brightest at the centre, pattern of bright and dark fringes
5
Huygen's principle assumed that light travels faster in a more dense medium
True
False
6
What did the interferometer measure in the Michelson and Morley experiment?
temperature
speed of oil drops
speed of electrons
speed of the earth
7
velocity of an electron at the anode
root(2em/V)
root(Vm/e)
2eV/m
root(2eV/m)
8
A space ship is 15m long when parked and is flying at 0.9c. It's length as measured by a stationary observer is
<15m
=15m
>15m
9
who was right about light?
newton
huygen
10
On a new train travelling at 0.2c, you travel a 100km journey in how long (as recorded on your own timer onboard)?
1.02s
1.67x10-3s
1.61x10-3s
1.63x10-3s
11
One of Thomson's conclusions about cathode rays was:
their properties change with different gases
very dense
large charge to mass ratio
+ve charge
12
lucy is in a spaceship at 0.9c uses her clock to measure 1 hour, how much time passes on earth?
2.4 hours
1.7 hours
2.3 hours
2.2 hours
13
radius for stationary oil droplet between two charged plates
9ην/2ρg
9η/2ρν
14
What was the result of the Michelson-Morley Experiment?
No interference patterns were seen near the speed of light.
No interference patterns were seen
There was no difference in the pattern when the apparatus rotated.
There was no difference in the x and y interference patterns.
15
what's a consequence of special relativity?
you weigh more
skin rash
you can only travel at the speed of light
length contraction
