Physics Exam Thoughts (3 Viewers)

[Drdusk]

I personally found it much easier than previous years.
How about you guys?

 

[thejimster_73]

Based on the syllabus changes, I was expecting a challenging and conceptual paper but instead got a steaming turd.

 

[sourish]

Found the short answer alright, but the mc hard

 

[Robrules3]

I also found it easier, band 6 cut off will defininately be higher. What did u guys write for the reason that projectile motion experiment was invalid? I honestly had no clue what to write so I just said that you can’t measure the horizontal displacement coz the starting position is not from the ground and this would affect the result. Would I get any marks for that?

 

[thejimster_73]

I also found it easier, band 6 cut off will defininately be higher. What did u guys write for the reason that projectile motion experiment was invalid? I honestly had no clue what to write so I just said that you can’t measure the horizontal displacement coz the starting position is not from the ground and this would affect the result. Would I get any marks for that?

I think it's cause he's only got a ruler for the horizontal and not the vertical.

 

[Stev3n]

what graph did everyone draw for the spinning magnet inducing emf? (3 marker)

 

[Stev3n]

did anyone know how to do the 6 marker on transmission lines and houses? I found that one really hard

 

[Drdusk]

what graph did everyone draw for the spinning magnet inducing emf? (3 marker)

It's a normal emf curve except the amplitude and frequency is increasing

 

[Stev3n]

Sin or cos graph?

 

[thejimster_73]

Sin or cos graph?

It starts from stationary so probably sine

 

[sourish]

Damn, I forgot increasing frequency

 

[Powereaper]

what graph did everyone draw for the spinning magnet inducing emf? (3 marker)

For that curve I had increasing amplitude and decreasing period every half-rotation since velocity was increasing

 

[Drdusk]

For that curve I had increasing amplitude and decreasing period every half-rotation since velocity was increasing

Ah be careful. Period is the time it takes to complete one rotation. Since velocity is increasing this time will be less

 

[Powereaper]

What did people do for Wilson's cloud chamber for Y? I put gamma, cause the tracks were not zig-zag

 

[Exp]

I found the mcq very hard- probably list 4+ marks lol.

For Q2Q, what was source X and Y?? I was gonna put alpha radiation for both but it specifically states that they are different types of radiation, so I put:
X as beta
- shorter half life
and Y as alpha
- longer half life

I have no idea if that's correct :/

 

[sohail747]

Does anyone know how many marks the question about the impacts of scientific knowledge and development of technology on use of semiconductors was

 

[Exp]

What did people do for Wilson's cloud chamber for Y? I put gamma, cause the tracks were not zig-zag

If I remember correctly, X was the first, short one and Y was the second, longer one, but anyway maybe it was gamma... but both tracks were straight like a standard alpha path

 

[Exp]

Does anyone know how many marks the question about the impacts of scientific knowledge and development of technology on use of semiconductors was

4

 

[Drdusk]

I found the mcq very hard- probably list 4+ marks lol.

For Q2Q, what was source X and Y?? I was gonna put alpha radiation for both but it specifically states that they are different types of radiation, so I put:
X as beta
- shorter half life
and Y as alpha
- longer half life

I have no idea if that's correct :/

X was alpha because they produce short and thick tracks(hence why it was in bold)
Y was beta as they produce long and thin tracks.

 

[whatafeeling]

Ok MC sucked
But I expected short answer to be way harder
Option (Quanta) was the best.




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