Improving Physics P6 Experiments' Accuracy (PRECAUTIONS)

[Abdullah Rashid96]

whats the string method

 

[Tekno-M]

Just what i was looking for, thanks.

 

[shalala]

Guys HELP NEEDED!
Question No. 1 b)

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_s08_qp_6.pdf

 

[Spunkyfarhan]

Hey everyone. So seeing as the Physics P6 is tomorrow, I thought I'd give a list of ways for improving the accuracy of the results (for experiments):

Minimizing heating effect of a current:
• Lower current
• Increase voltage
• Add a lamp
• Increase resistance of a resistor

To increase accuracy of ray diagrams
• View bases of pins since pins may not be vertical
• Keep pins further apart
• Use more pins
• Avoid parallax, explain action and reason
• Repeats and average

Adjustments made to experiments will be made to increase accuracy

Improvement made to experiments about heating effect and insulation
• Lids
• Repeats
• Stirring
• Record max. Temperature
• Add insulation
• Keep constant room temperature
• Avoid heat loss

How to check if a rule is vertical:
• Protractor
• Use of set square
• Plumb line
• Spirit Level

Precautions taken in experiments about formation of images by a lens
• Use a darkened area
• Meter ruler on bench or clamped
• Object and lens same height on bench
• Mark on lens holder to show center of lens
• Take more readings
• Avoid parallax error, explain action and reason
• Lens\screen perpendicular to bench

Variables in experiments about springs and stretching effect:
• Number of coils
• Length of spring
• Diameter\thickness of spring or wire
• Range of loads
• Length of wire
• Coil spring

Periodic time (T) is measured by timing a number of oscillations, then divide the time taken for all the oscillations by the number of oscillations

Drawing graphs:
• Label axis
• Choose a proper scale
• Well judged best fit line
• Thin and neat lines

Measuring the gradient:
• Draw a triangle on graph
• Use clear lines
• Triangle must be larger than half the line

Sources of error in calculating circumference by string method:
• Parallax
• Diagonal winding
• Thickness of string

Improvement made to calculating circumference by string method
• Avoid parallax error
• Repeats and average
• Thinner string
• Parallel winding of springs

It's not the BEST list in the world, but hopefully it will help... :wink:
Best of luck, Inshallah we'll all get A*

Bro see this
Nice work but plz check it =P!

 

[Saadiya Ahmed]

in M/J p6 variant 2 could someone please explain ques 1 part c?

 

[inquisitiveness]

what does triangle seen mean?how do you actually make that triangle on the graph

 

[sweetiepie]

http://www.xtremepapers.com/community/threads/atp-notes.20798 notes

 

[sweet.sugar]

Thanku sooo much friend
It meant alott

 

[Sheheryar Yousaf]

Resistance and Voltage is directly proportional!
Remember this if one increases other increase as well and vice versa.
Increase is resistance causes decrease in current; Similarly for the voltage.
hope it helped. (Y)

 

[XxChampXx]

Hey everyone. So seeing as the Physics P6 is tomorrow, I thought I'd give a list of ways for improving the accuracy of the results (for experiments):

Minimizing heating effect of a current:
• Lower current
• Increase voltage
• Add a lamp
• Increase resistance of a resistor

To increase accuracy of ray diagrams
• View bases of pins since pins may not be vertical
• Keep pins further apart
• Use more pins
• Avoid parallax, explain action and reason
• Repeats and average

Adjustments made to experiments will be made to increase accuracy

Improvement made to experiments about heating effect and insulation
• Lids
• Repeats
• Stirring
• Record max. Temperature
• Add insulation
• Keep constant room temperature
• Avoid heat loss

How to check if a rule is vertical:
• Protractor
• Use of set square
• Plumb line
• Spirit Level

Precautions taken in experiments about formation of images by a lens
• Use a darkened area
• Meter ruler on bench or clamped
• Object and lens same height on bench
• Mark on lens holder to show center of lens
• Take more readings
• Avoid parallax error, explain action and reason
• Lens\screen perpendicular to bench

Variables in experiments about springs and stretching effect:
• Number of coils
• Length of spring
• Diameter\thickness of spring or wire
• Range of loads
• Length of wire
• Coil spring

Periodic time (T) is measured by timing a number of oscillations, then divide the time taken for all the oscillations by the number of oscillations

Drawing graphs:
• Label axis
• Choose a proper scale
• Well judged best fit line
• Thin and neat lines

Measuring the gradient:
• Draw a triangle on graph
• Use clear lines
• Triangle must be larger than half the line

Sources of error in calculating circumference by string method:
• Parallax
• Diagonal winding
• Thickness of string

Improvement made to calculating circumference by string method
• Avoid parallax error
• Repeats and average
• Thinner string
• Parallel winding of springs

It's not the BEST list in the world, but hopefully it will help... :wink:
Best of luck, Inshallah we'll all get A*

Bro see this
Nice work but plz check it =P!

Thank you so much

 

[DUNKMANIA1999]

OMG Thank you so much

 

[Sheheryar Yousaf]

OMG Thank you so much

You are welcome

 

[Sheheryar Yousaf]

Thank you so much

You are welcome

 

[sj0007]

Thnx........the list is quite awesome!!!