# AQA a level physics 2020 - AUTUMN RESITS

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#1
Seeing as the first exam is now over. How did everyone find it. I thought the paper was ok overall I just made silly mistakes. I struggled on the circular motion question, the question about which wire would give brighter bulbs and the question about if frequency decreased would the amplitude of sound decrease.
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6 months ago
#2
for the frequency one, i said if u change frequncy, it changes wavelength but not amplitude. So changes pitch but not loudness
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6 months ago
#3
(Original post by gorilla_08)
for the frequency one, i said if u change frequncy, it changes wavelength but not amplitude. So changes pitch but not loudness
I wrote frequency is inversely proportional to wavelength so wavelength will increase hence the maxima separation will increase so it will get louder at C
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6 months ago
#4
(Original post by sym1554)
I wrote frequency is inversely proportional to wavelength so wavelength will increase hence the maxima separation will increase so it will get louder at C
isnt loudness proportional to the amplitude, not the wavelength?

i thought the wavelength coresponds to pitch, and amplitude to volume/loudness
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6 months ago
#5
(Original post by gorilla_08)
isnt loudness proportional to the amplitude, not the wavelength?

i thought the wavelength coresponds to pitch, and amplitude to volume/loudness
But this question was talking more about interference so larger wavelngth meant that the spacing was larger so you could hear the loudest further from B so closer to C therefore it will be louder
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