Physics Help plz !!

[HyDraZin3]

Can anyone tell me the proper experiment for the whole question 11 which covers all the points in the mark scheme?
Question:-http://www.xtremepapers.me/CIE/Cambridge%20IGCSE/0625%20-%20Physics/0625_s03_qp_3.pdf
Mark scheme:-http://www.xtremepapers.me/CIE/Cambridge%20IGCSE/0625%20-%20Physics/0625_s03_ms_1%2B2%2B3%2B5%2B6.pdf

THANKS

 

[igcse2011]

Look at this attachment for the question...
Hope it helps !

 

[HyDraZin3]

OMG THANKS A LOT MAN!!! and frm where did u get this model answer, i want it for most of the years

 

[igcse2011]

You dont get it for all years i guess. I saved it long back so i dont remember from where i got it .. Sorry !
& Ur Welcome

 

[igcse2011]

Could you help me with this ?
1) use and describe the use of a cathode-ray oscilloscope to display waveforms.
2) Describe experiments to show good and bad emitters and good and bad absorbers of infra-red radiation.
3) Explain why energy losses in cables are lower when the voltage is high.

Thanks in advance

 

[HyDraZin3]

1> I just know how the waveforms are formed
They are formed when X plates deflect the beam horizontally and y plates deflect the beam vertically when the electrons cause the fluorescent screen to glow

2>FOR GOOD AND BAD EMITTERS:- take 2 copper sheets, one which has dull black surface and the other which has polished surface then heat both surfaces with a bunsen burner and keep your hand towards the black sheet .You will find that the black surface is more hot cuz it is emitting infrared radiation
FOR GOOD AND BAD ABSORBERS:-take 2 cans, one which has a polished surface and other which has a black surface and then pour water into it.Put thermometer inside the 2 cans and heat both the cans with the bunsen burner.The Thermometer will show more temperature in the can which has a dull black surface because it is a good absorber
SURFACES THAT ARE GOOD ABSORBERS ARE ALSO GOOD EMITTERS.

3> i will scan the page and will put it here afterwards
Hope u have understood what i said