You are Here: Home >< Physics

Number of SF [OCR Physics B]

Announcements Posted on
Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. Front of papers say an appropriate number, the internet says an appropriate number, TSR says an appropriate number (all meaning the same sf of the least accurate given in the question)

But I just came accross a past paper where the data is 2 sf and the answer asks specifically for an extra digit. Am I being crazy? Should I just put 3sf in my exam and scrap the accuracy mark?

Question 4:
QP:
http://www.ocr.org.uk/Images/63488-q...k-universe.pdf

MS:
http://www.ocr.org.uk/Images/59853-m...me-january.pdf
2. The data is not just 2. It is 2.0 which is 2 sf. The answer then just needs to be worked through and the conclusion is your answer is about 1.3
3. (Original post by nerak99)
The data is not just 2. It is 2.0 which is 2 sf. The answer then just needs to be worked through and the conclusion is your answer is about 1.3
That doesn't really answer my question...

I wrote 1.3 as the answer but the mark scheme says that 1.34 is necessary. I was asking why the 1.34 is necessary.
4. 3 significant figures always, unless it says appropriate amount in the question, which means use the same amount of sf that the information given to you in the question had. does that make sense?
5. (Original post by zackdove)
That doesn't really answer my question...

I wrote 1.3 as the answer but the mark scheme says that 1.34 is necessary. I was asking why the 1.34 is necessary.
Always give to the accuracy in the question.

However, my understanding here is that they're requiring 1.34 to show that it rounds down to 1.3 and not up to 1.4.
6. (Original post by oinkk)
Always give to the accuracy in the question.

However, my understanding here is that they're requiring 1.34 to show that it rounds down to 1.3 and not up to 1.4.
Ah okay brilliant! Makes sense (kinda) now, cheers
7. (Original post by zackdove)
Ah okay brilliant! Makes sense (kinda) now, cheers
No worries!
8. Does anyone have the practice papers for OCR B?
9. (Original post by hkmt)
Does anyone have the practice papers for OCR B?
What do you mean? Past papers?
10. (Original post by zackdove)
What do you mean? Past papers?
The practice papers that some schools have done for B. I've done the specimen paper and previous spec papers and what to try the practice papers in preparation for my internal mock.
11. (Original post by hkmt)
The practice papers that some schools have done for B. I've done the specimen paper and previous spec papers and what to try the practice papers in preparation for my internal mock.
Only thing I have is the past papers from here: http://physics.taskermilward.org.uk/KS5/past_papers/
Other than that I have no clue, sorry

Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: May 22, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

Who is getting a uni offer this half term?

Find out which unis are hot off the mark here

Brexit: Why you should study law

Poll
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.