AQA Astrophysics Exam Discussion PHYA5 Physics Unit 5 Part B

Finally someone made a Astrophysics thread !

Man I am soooo unprepared, compared to my other exams this is the one I'm most scared of, is anyone else the same?

A guy just said on the other thread 'If you're doing astrophysics, you'll need to remember I=P/4pi*d^2' is this true? It isnt on the spec?

6 marker predictions anyone?

Posted from TSR Mobile

What did you get for distance to object from lens? I think I got 0.20
Distance between objective and eyepiece I got 0.90
Wasn't sure what the silicon chip questions were asking so I basically just repeated what I said tbh


Posted from TSR Mobile

That was kinda nice. Very wordy though, not many calculations, in both part a and b

that was such a nice paper, what did everyone put for the star which was furthest away?

The hottest one can't remember it's name, because it had the largest surface area and so largest radius and largest temperature so the power output of it would be greatest meaning very negative absolute magnitude, difference between absolute and apparent magnitudes is greatest (as it had the highest apparent magnitude)


Posted from TSR Mobile

Due to this and the 6 marker requiring memorisation of classes and their temperatures etc I reckon the grade boundaries will be low (for this part at least)


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