AQA A-level Physics Paper 3 (7408/3) - 15th June 2023 [Exam Chat]

Reply 60

Lu1111

Does anyone have the 2022 Paper 3 with section 3B Turning points?

Reply 61

Bleep us

1

Original post by henri17

They're fake then

Nah, they’ve admitted that the bio aqa one was actually leaked and a lot of people said that for psych they had already seen some of the questions on tiktok

Reply 62

Levs05

Really hoping they go easy on us with this one, paper 2 kicked me in the teeth and this one is awful to revise for.

Reply 63

moonlight2460

8

Do different schools do different options?

Reply 64

arialle

17

Original post by moonlight2460

Do different schools do different options?

They can do, my friends school does two options tho because they have two classes so it varies.

(edited 10 months ago)

Reply 65

Kingemperor07

11

Original post by moonlight2460

Do different schools do different options?

Yeah we are doing astro, its very content heavy so not the best.

Reply 66

Marvel-fan123

1

What do people think will come up for Astro tomorrow?

Reply 67

username6113454

4

Anyone know if it’s possible to find the number of entries for each option?

Reply 68

d-v989ejdve9

4

for astrophysics
does anyone remember an equation that is l2/l1 = e^(m1-m2)
I can't find this anywhere on google, but I'm sure it is an important equation, l= luminosity, and m = mass i think

also remember 2 important facts

collecting power is proportional to area^2
and
intensity=Luminosity/4pi (distance from object)^2

Reply 69

Kingemperor07

11

Original post by d-v989ejdve9

for astrophysics
does anyone remember an equation that is l2/l1 = e^(m1-m2)
I can't find this anywhere on google, but I'm sure it is an important equation, l= luminosity, and m = mass i think

also remember 2 important facts

collecting power is proportional to area^2
and
intensity=Luminosity/4pi (distance from object)^2

I think you are talking about this equation:
Screenshot 2023-06-14 195000.png

I is intensity and m is apparent magnitude

(edited 10 months ago)

Reply 70

moonlight2460

8

Anyone got predictions of what might come up for turning points?

Reply 71

fletch781

What do you guys think about doing section B first and then section A in the exam?

Reply 72

Kingemperor07

11

Original post by fletch781

What do you guys think about doing section B first and then section A in the exam?

Idek, Personally I would do section A first because that requires the most brain power, and if you do B first your brainpower is exhausted and won't perform as well on the arguably much harder section A

Reply 73

frauschlange

11

Yes it's the brightness intensity ratio equation (relates to Hipparcos scale, logarithmic increase of 2.51x each interval for the traditional 1-6 apparent magnitude scale, 1 is 100x brighter than 6)

Original post by d-v989ejdve9

for astrophysics
does anyone remember an equation that is l2/l1 = e^(m1-m2)
I can't find this anywhere on google, but I'm sure it is an important equation, l= luminosity, and m = mass i think

also remember 2 important facts

collecting power is proportional to area^2
and
intensity=Luminosity/4pi (distance from object)^2

Reply 74

frauschlange

11

I've always preferred to do section B first lol, it gets my brain warmed up for section A.

Original post by Kingemperor07

Idek, Personally I would do section A first because that requires the most brain power, and if you do B first your brainpower is exhausted and won't perform as well on the arguably much harder section A

Reply 75

Throwa

5

Original post by Bleep us

Nah, they’ve admitted that the bio aqa one was actually leaked and a lot of people said that for psych they had already seen some of the questions on tiktok