PHYSICAL SCIENCES
GRADE 12
PAPER 1 
NSC PAST PAPERS AND MEMOS
SEPTEMBER 2017

The Physical Sciences P2 Grade 12 September was written on Thursday, 07 September 2017. It was brought to our attention that during the course of marking a number of  corrections and additions were detected.  
In order to ensure that a standardised approach to marking is adopted across the Province and ensure that learners are not disadvantaged, the examiner and moderator were asked to  prepare an errata which should address all the concerns raised. 

Related Items

ERRATA  

 

CORRECTIONS 

REMARKS/COMMENT 

YES/NO

1.6 

One of the free-body diagrams below  shows all forces acting on the ball. … whilst it is moving up the incline …

D is correct. 

ACCEPT C 

error

4.3.3 

  • Statement indicated 7 m from A–C.  What the arrow shows does not  change the question.
  • Learners were required to use  “Energy principles” to calculate the  kinetic frictional force between B and  C …
    “So energy principles must be used”

No change. (follow the  memo) 

  • The statement is clearly  stating that … slides down 7 m from A to C on  an incline plane.
  • Learner cannot use  kinetic frictional force to  calculate kinetic frictional  force.

error

6.5.1 

  • The answer is “AWAY” as indicated in  the memo.
  • No correction.

Away at the end of the  statement. 
No change. (Follow the  memo.)

No  

error

7.3 and 7.4

No corrections. Sphere L is +2 μC  before contact with sphere M and  became -3 μC after contact with sphere  M. 

No change. (Follow the  memo.)

No  

error

10.3.2 

No corrections. Increase remains. 
The question is not asking anything about  intensity which has to do with more  ejected electrons but the reference is the  threshold.  
At source A – No electrons (f < fo) but at  source B – there are electrons (f > fo).

No change. (Follow the  memo) 
Source A has frequency lower  than the Threshold frequency … so no electrons will be  ejected.(so number is Zero  electrons) 
Source B has frequency higher  than the threshold frequency … So electrons will be  ejected.(so number is greater  than Zero)

No  

error

Last modified on Friday, 23 July 2021 13:58