Upcomming Physics Practical 2015 (9702) 4 June 2015

[iqbal]

the first question in nov 2014 34 is about refraction

 

[muhammadali233]

can you please post you practical.. so that i can have a little idea about it

it was Ktype; We had a lightsource (any) we had to make a image on a screen through converging lens ,the image should be clear not blur(sharp image) now fix them in place now measure focal length , diameter of lens and height of image
then measure uncertainty of your ruler or vernier caliper
then you know how it goes
Tip:
Make an outline so if it moves you can still measure the height or anything question asks

 

[iqbal]

for exp1: plastic box, wooden/plastic stick, masses
for exp 2: meter rule, 2 convex lenses, board with a paper attached ( paper will have squares of 0.5 cm2 )

 

[Kinza Rana]

it was Ktype; We had a lightsource (any) we had to make a image on a screen through converging lens ,the image should be clear not blur(sharp image) now fix them in place now measure focal length , diameter of lens and height of image
then measure uncertainty of your ruler or vernier caliper
then you know how it goes
Tip:
Make an outline so if it moves you can still measure the height or anything question asks

Math Buddy

 

[iqbal]

it was Ktype; We had a lightsource (any) we had to make a image on a screen through converging lens ,the image should be clear not blur(sharp image) now fix them in place now measure focal length , diameter of lens and height of image
then measure uncertainty of your ruler or vernier caliper
then you know how it goes
Tip:
Make an outline so if it moves you can still measure the height or anything question asks

thanks

 

[muhammadali233]

thanks

anytime, if you get to know anything else PM me

 

[iqbal]

msg me in inbox

 

[kesha27]

it was Ktype; We had a lightsource (any) we had to make a image on a screen through converging lens ,the image should be clear not blur(sharp image) now fix them in place now measure focal length , diameter of lens and height of image
then measure uncertainty of your ruler or vernier caliper
then you know how it goes
Tip:
Make an outline so if it moves you can still measure the height or anything question asks

Can you suggest some of the improvements and limitations you put?

 

[Rashiqul Alam]

is there any light related question no 2 in previous year, pls help

 

[Rashiqul Alam]

Can you suggest some of the improvements and limitations you put?

yes please, I need those

 

[muhammadali233]

If you are asking about the question about how to improve this might be the answers i am not aware of the limitations
2 reading are not enough
take more sets of reading and plot a graph
parallax error
align the ruler with plumbline and use setsquare to take exact reading

 

[kesha27]

If you are asking about the question about how to improve this might be the answers i am not aware of the limitations
2 reading are not enough
take more sets of reading and plot a graph
parallax error
align the ruler with plumbline and use setsquare to take exact reading

That's okay thank you

 

[kitkat <3 :P]

Kamihus

 

[kesha27]

How did you guys calculate T?

 

[muhammadali233]

How did you guys calculate T?

I took 5 readings and then avg

 

[kesha27]

I took only two then average

 

[M.Fazy]

I took time for 10 oscillations then did it again. Added both the readings and divided it by 20.

 

[kesha27]

Ooww then I guess mine is wrong

 

[slisjunknown]

Did anyone get negative values for k in the 2nd question?