Amazing notes for physics paper 6!!

[сᴏᴏʟ сяуѕтᴀʟѕ]

oo thnk u so much silly me thank uuuu

haha...no need to thank..juss remember me in your prayers

 

[balloonsandhighlighters]

Thank you guys for the wonderful replies!! Good luck

 

[kareem]

Centre of mass experiment (with the lamina): How to minimize inaccuracy when marking the lines : you view the string directly in front of card.

Why angle i is NOT equale to angle r in ray experiment:

- thickness of pins
-thickness of mirror
-protractor is not precise

In an experiment to do with the cooling of water, there are certain things which must be kept the same:

- initial temp.
-thickness of test-tubes ( more heat lost when thinner etc.)
-vol. of water
-thickness of cotton wool
-depth of the thermometer in the water
-avoid droughts


Examples of insulators that you can wrap things with:
-bubble wrap
-fiberglass
Styrofoam is a good insulator , however you cannot wrap it around things as it breaks easily.

inaccuracy of ray box method: thickness of rays.
inaccuracy of pin method: pins not straight, or too close, or thickness of lines drawn.

Symbol for extension is 'x' or 'e'.

A ruler is called a 'rule'.

ALWAYS ROUND TO 3.SIG.FIGS.

To improve accuracy, put pins in the light ray experiment FURTHER APART to avoid parallax error. So, I I I is better than I I I (where I is the pins)

Precautions for circuit readings of I and V so that accurate:

For I specifically :
-limit current so that temp. doesn't increase
-use a tapping meter

For I and V: Switch off between readings.

θ this is the symbol for Celsius temp. (theta)
T this is the symbol for Kelvin temp.

In light ray experiment, lengths are in mm.


Fair test for pendelum experiments:
-length of pendelum
-shape of bob
-no. of swings
-amplitude

If a statement is 'directly proportional', the justification would always be , ''straight line that goes through the origin''.

If you're comparing the extensions of springs of different materials, certain things have to be the same:
-the cross-section of the springs
-the length of the springs
-the room temperature


How to reduce the heating effect of current:

-Add a variable resistor
-reduce current
-reduce voltage or power
-switch off between readings

Precautions for focal length experiments:
-do it in a darkened room
-clamp ruler to bench
-avoid parallax error when reading the lengths
-make sure that the obejct/lense/screen are all perpendicular to bench.
-and of course, repeats.

A question one came up and asked to draw a diagram of a load on a ruler on a pivot. Well, this meant that the ruler was unbalanced, and so this means that when you draw it, you must show that the ruler is tilted.

DON'T FORGET TO WRITE DOWN THE UNITS AFTER EACH ANSWER!!!

An important precaution for spring experiments is to wait for the spring to stop moving and then record the length.

There you go! Thats it! These are my notes that i made using past papers! Just pray for me and the others! Inshallah we all get good grades! Ameeeen

guys dont ALWAYS round to 3sf , IF ITS A TABLE AND THE VALUES ARE IN 2 S.F THEN WRITE THE VALUES IN 2 SF

 

[Redouane]

This is cool, thanks.

 

[BusterSword]

How do we clamp the ruler to the bench?
A diagram, if possible please

 

[Z.A.M]

How do we clamp the ruler to the bench?
A diagram, if possible please

Ohhh Buster this the xact question I asked u?????

 

[eshal khan]

Assalam-o-alaikum wr wb...
Jazakallah Khair for sharing and Aameen!

May Allah give all of us success in this world as well as the Hereafter

Ameeen

 

[eshal khan]

How do we clamp the ruler to the bench?
A diagram, if possible please

yay even i have the same doubt ... cana nyone help plz?

 

[somaya]

sorry for being late...had to go

well...here it is...hope it helps

View attachment 11290View attachment 11289​

shud da protactor b of actual size.....(real )

 

[Chucky]

fair test for springs, in recent mark schemes I saw that they do not accept "keeping temperature constant" as a valid point.
just thickness of spring and length

 

[kboss]

fair test for springs, in recent mark schemes I saw that they do not accept "keeping temperature constant" as a valid point.
just thickness of spring and length

hey chucky!
could u help me out on the last question (5c) in this paper:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w10_qp_63.pdf

 

[Chucky]

hey chucky!
could u help me out on the last question (5c) in this paper:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w10_qp_63.pdf

i'm not sure, but I guess it means that you have to make a shadow on the spring using light projected straight at it, and then measure the shadow I guess

i tried google, i don't get it either!

 

[kboss]

i'm not sure, but I guess it means that you have to make a shadow on the spring using light projected straight at it, and then measure the shadow I guess

i tried google, i don't get it either!

ok...thanks for ur efforts though

 

[zain.s]

to draw line of best fit is easy how to draw curve of best fit?

 

[David Hussey]

hello ppl
in mj 2010 61 question 2b
i took the scale as 20 degree celsius for 10 units,
is it a suitable scalE?
and if not....can any1 tell me how 2 use an appropriate scale for any graph? thnx in advance!

 

[David Hussey]

can v use a high resistance lamp 2 get a low current in order 2 get accurate reading?

 

[Jisu]

thanks a million

 

[kainat husain]

how was the paper i did variant 62! it was al7amdulellah good excpt the last one

 

[aliiiiiiiiii]

hey ppl helpppp see Q-2 b iii nov 2005
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w05_ms_6.pdf
pl i used the calculator it came 1.35 in the mark scheme it deffrent

 

[David Hussey]

m doing 61
wht was the last one about? :/
wht questions came?