6PH02:HOW WAS PHYSICS UNIT 2?

[7ooD]

there was no time so i said that they measure the speed by multiplying frequency received by wavelength and for the oil and water i said total internal reflection and reflection from oil surface interfere wiz each other thats why we see the monochromatic interference and for the glass i said it was critical angle thats why ray didnt pass through the air and i got the angle 43. something and for the computer question the power one i said time was more than doubled because if energy is kept constant the power will be less than half because of internal resistance of battery and power is inversely proportional to time therefore time is more than doubled thats all i can remember :d

[studz]

i've written the same for these questions...

[bahaa spain]

guys wht did u get for the refractive index ?
in the multiple choice question of resistor and filament lamp what was the current was it 0.2?

[Saladin]

there was no time so i said that they measure the speed by multiplying frequency received by wavelength and for the oil and water i said total internal reflection and reflection from oil surface interfere wiz each other thats why we see the monochromatic interference and for the glass i said it was critical angle thats why ray didnt pass through the air and i got the angle 43. something and for the computer question the power one i said time was more than doubled because if energy is kept constant the power will be less than half because of internal resistance of battery and power is inversely proportional to time therefore time is more than doubled thats all i can remember :d

What you said about the UPS doesnt make sense.....

[7ooD]

i kno

[Saladin]

For the light it is a different thing.

You see when the light rays hit, they go into antiphase.

This causes them to super impose with the light outside.

Thus, this causes areas of darkness and areas of light.

[7ooD]

yes rite constructive interferance occur as a result of them hitting each other but i forgot to write areas of darkness and areas of light cuz they didnt as about it do i still get the mark?

[7ooD]

and for the glass did i write it rite? and wat waz i suppose to say for they ups

[Saladin]

and for the glass did i write it rite? and wat waz i suppose to say for they ups

For the UPS, the thing is that the computer is not 100% efficient.

So, that means that more of the power is used, compared to 700W, from which 80% may be used, to 350 W, from which 80% is to be used.

The 350 has less power wastage. Thus, meaning that more of the power is actually used in comparison. So it is not really completely halved.

[T.Q]

6PH02 paper link

http://www.scribd.com/doc/32843706/June-9th-Edexcel-Physics-Unit-2

[Book lover22]

hmmmmmm.....

for da UPS last question i just said as current is lost as heat in da cables n as p=i2r more power is lost so it decreases more dan half....doest dat make any sense?

n 4 da last mcq i got 0.3??

wat abt da thermistor last part?? did da current decrease? :?

[studz]

6PH02 paper link

http://www.scribd.com/doc/32843706/June-9th-Edexcel-Physics-Unit-2

heyy how could the paper be published on the net so soon..we've just given it!!

is there a MS too then??

[T.Q]

heyy how could the paper be published on the net so soon..we've just given it!!

is there a MS too then??

no there is no MS

[S.M.A.T]

someone please tell me the answer of the given question

the link is given below

[bahaa spain]

the question that asked for the number of flashes what did u ppl say?
and for the ups question i said it is related to efficiency