AQA Physics Unit 1 PHYA1 20th May 2014 OFFICIAL

245nm

Well ****. I used the crap they gave us too but added you could always add an Ammeter and thermometer to measure the temperature.

for 2e i swear you could still must weak interaction and a W^+/-

Easy paper, although the style of questions was a bit different


I^2R

Finally, someone who agrees! Everyone had been complaining it was difficult and I thought it was quite average - as did most of my friends.

For the question where you had to calculate the energy in eV, does anyone remember the wavelength that they gave us? It was in nanometers.

Finally, someone who agrees! Everyone had been complaining it was difficult and I thought it was quite average - as did most of my friends.

Wasn't it 236nm?

I thought that at first, but then you've got too many measurements to put on a graph - current, voltage and temperature. So I omitted the ammeter

Do you think I'll at least get two marks for saying, "repeat the experiment for repeated measurements and the.tabulate the results and plot an I-V graph and the resistance is then 1/gradient."?

Why are you talking about R and I? We weren't measuring that.

Do you think I'll at least get two marks for saying, "repeat the experiment for repeated measurements and the.tabulate the results and plot an I-V graph and the resistance is then 1/gradient."?

Finally, someone who agrees! Everyone had been complaining it was difficult and I thought it was quite average - as did most of my friends.

What was the significance of the critical temperature? Is it necessary to put uses or can you just say what it is?
How to define resistivity? Is 'resistance of a material for given dimensions' + equation good?
And do you think I would get the marks for saying R in q7 was to avoid short circuit?

Thanks

278nm

Well, 6 marks down the drain then