AS PHY PRACTICAL 33

[Joker101]

Are you sure only one slope is included in the experiment. Cause i have a feeling Cambridge will just make the question a bit harder by trying to get us to find the distance the marble will travel up in another slope.

 

[A*(a*)]

by tilting the plane?

Are you confirmed its Q2 and would not involve graph na?
and what people mean by marble here? the slope?

 

[kelly sheers]

its blocked in pakistan ..

oh okay.

 

[MustafaMotani]

oh okay.

So according to that video ... when we have to vary resistance we just connect it to the circuit with upper connection .. ?

 

[h4rriet]

thanks a loot bro...one last doubt .. what we write when they say justify the no. of sig. fig. ??

You have to say that the values you used to calculate k were, for instance, 3 significant figures, so k too has to be 3. And if you use two values to calculate k, one 2 significant figures and the other 3 significant figures, then k can be either 2 or 3 significant figures.

 

[faizay warsi]

ny one with apparatus list n GUess QUESTIONS please contact or reply

 

[falcon678]

ny one with apparatus list n GUess QUESTIONS please contact or reply

dude just look back few pages...whole question is there...

 

[MustafaMotani]

ny one with apparatus list n GUess QUESTIONS please contact or reply

Surf the thread bro..

 

[kelly sheers]

v pakistanis...itz blocked here thnks to our old Government.. n new one isnt paying attention to unblock it...

that's sad.

 

[faizay warsi]

dude just look back few pages...whole question is there...

brother kindly can u post again on this page...

 

[falcon678]

Are you confirmed its Q2 and would not involve graph na?
and what people mean by marble here? the slope?

i gues...thtz not confrmd thou....
the ball type marble? banta? ball?

 

[kelly sheers]

Are you confirmed its Q2 and would not involve graph na?
and what people mean by marble here? the slope?

it's the marble ball. no graph hopefully

 

[falcon678]

two questions....one electcial other mechanical... electricity one will consist of -Variable Resistor, switch, battery, a sample wire, connecting wires, an ammeter and voltmeter...u willhave to measure the V & I after setting the apparatus after changing resistance of the rheostat on the variable and make a graph using the values....
while the second one has a clamp stand, a marble, stopwatch...u need to slide down a ball from a certain height, note the time.....

brother kindly can u post again on this page...

here...

 

[talalz]

time ke significant figures ka kya scene hota hai ?
1- reading from stop watch
2- manual watch
3- derived quantities from time ?

please help me out ...

 

[RWTH]

When they tell you to assemble the apparatus, just write `K` infront of it.
Eureka, your `k` finding problems are over

 

[kelly sheers]

So according to that video ... when we have to vary resistance we just connect it to the circuit with upper connection .. ?

the question we'll be getting is not about varying the resistance..but about finding the resistivity for different length of wire. check O/N 2012 paper 34. a similar one probably. im not sure about this paper though

 

[talalz]

and how to proove a given a relationship if proportional or not, after we have calculated the values of "k" ?
for e.g for xperiment 1. k is 0.789 and for experiment 2 k is 0.920 ... what do we do next from here ?

 

[kelly sheers]

Surf the thread bro..

could someone tell me the equation regarding" k" and stuff?

 

[MustafaMotani]

the question we'll be getting is not about varying the resistance..but about finding the resistivity for different length of wire. check O/N 2012 paper 34. a similar one probably. im not sure about this paper though

resistivity has to be constant..

 

[MustafaMotani]

could someone tell me the equation regarding" k" and stuff?

what we were told in the school .... ..

get two values of k ...
then (larger-smaller)/larger x 100

if the value is less than 10% than relationship valid...if greater than 10% then relationship not valid