Biology; Chemistry; Physics: Post your doubts here!

[FirstHippo]

Hi! Can anyone explain to me how this question is done? I don't understand the association between the pressure and the volume. Is it indirectly proportional?

I don't speak Urdu btw

 

[Uchiha-Sasuke]

Hi! Can anyone explain to me how this question is done? I don't understand the association between the pressure and the volume. Is it indirectly proportional?

I don't speak Urdu btw

p1v1 = p2v2
take volume here as the height as the cross sectional area is constant
p*50=p2*20
p2=50p/20=2.5p

 

[Uchiha-Sasuke]

somebody explain this ... waiting..View attachment 42988

200 above atm
200+100 = 300
double volume = half pressure
300/2 = 150

 

[FirstHippo]

p1v1 = p2v2
take volume here as the height as the cross sectional area is constant
p*50=p2*20
p2=50p/20=2.5p

Thank you so much!

 

[Maganius]

its B

How?

 

[kirann]

How?

by applying p1v1=p2v2 and assuming volume as v
200*v=p2*2v
solve ull get the ans

 

[princess Anu]

pehlay parallel main uski extension x hain means ek spring ki extension 2x hain, jab series main 2 2x waley springs lgaen gey that will give 4x.

per each spring ki extension toh 1x haina as given in the question ? :s

 

[princess Anu]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_s13_qp_11.pdf
32 A part. I know the answer is D. But will the emf be doubled in A part?

Why isn't A the answer ?

 

[Awesome12]

Mind answering me?

Post the 1uestion again

 

[kirann]

ans is B but since its diverging so i couldnt get it

 

[asadalam]

ans is B but since its diverging so i couldnt get it

In case of diverging,the image is always virtual,diminished and ahead F.

 

[Uchiha-Sasuke]

ans is B but since its diverging so i couldnt get it

 

[asadalam]

Mera ya apka?
Ameen. :')

Raat ko 5 bajay so kar bhi uth gyi ho itni jaldi?!

 

[asadalam]

somebody explain this ... waiting..View attachment 42988

Ans is B?

 

[kirann]

Ans is B?

yes

 

[kirann]

In case of diverging,the image is always virtual,diminished and ahead F.

ohh so what about converging?

 

[asadalam]

yes

Pressure is inversely proportional to volume.Total pressure is 100+200 kPa,when volume is doubled the pressure would be halved and answer would be 300/2=150 kPa.

Can you give the year of the paper?

 

[kirann]

Pressure is inversely proportional to volume.Total pressure is 100+200 kPa,when volume is doubled the pressure would be halved and answer would be 300/2=150 kPa.

Can you give the year of the paper?

nov 2009

 

[kirann]

how the diagonal one is formed? logic?

 

[Uchiha-Sasuke]

how the diagonal one is formed? logic?

strraight line from object to lens, in case of converging it bends towards horizontal line (right) at F . In case of diverging it bends away from horizontal line (right) such that it virtually meets F on horizontal line at left