Physics: Post your doubts here!

[A*****]

My brother is on scholorship in khyber medical and he only gives 3000 rupees per year.All other things are funded by government + laptops are also given to them

Where is this college?

 

[A*****]

But they don't mention such pathetic stuff on their website....

 

[Hisham Khan]

The lowest merit is around 88% so if they decrease our percentages by 20% then how on earth is it possible to get in?

It can't be.Even if it's 10,it's impossible then from what you're saying.
Eta test is the main things.Your silamiat and pak studies grade also count during conversion which are added to alevel grades because we take only 4 subjects in alevels so to compensate it.
Once again it depends on eta,people were left by 0.5 marks

 

[Hisham Khan]

Even if you don't get into the college by scholorship,you can try self finance giving 3 lacs per year I guess but the merit for it is a lil bit high as well lol

 

[A*****]

Even if you don't get into the college by scholorship,you can try self finance giving 3 lacs per year I guess but the merit for it is a lil bit high as well lol

Private colleges are a waste!

 

[MShaheerUddin]

Not being shy
7A*s........................................... And 1A

Are you even human? xD

 

[A*****]

Are you even human? xD

There are humans with better grades than mine XD

 

[Kanekii]

Can somebody explain this?

 

[khadijaimran]

whats the concept behind this? the ans is B

 

[Hamnah Zahoor]

View attachment 64119 Can somebody explain this?

Not in syllabus anymore!

 

[Kanekii]

Not in syllabus anymore!

Cool!

 

[Hamnah Zahoor]

Cool!

Do read the last page of the syllabus.

 

[Hamnah Zahoor]

whats the concept behind this? the ans is B

Mass is inversly proportional to acceleration when a rocket propelled it consumes fuel thus overall mass decreases and acceleration increases.

 

[khadijaimran]

Mass is inversly proportional to acceleration when a rocket propelled it consumes fuel thus overall mass decreases and acceleration increases.

ah i was thinking the same and confused, thanks tho

 

[Hamnah Zahoor]

ah i was thinking the same and confused, thanks tho

You are welcome.

 

[Hisham Khan]

Private colleges are a waste!

I mean governement colleges ....
Private are as low as 15 lac per year lol

 

[khadijaimran]

this one please

 

[Kanekii]

this one please

Is it A?
Both electric field strength and weight of the object should act in opposite directions to balance vertical forces so that the particle could continue to move horizontally. So electric field strength can balance the weight acting downwards by applying a force upwards. If it was positioned upwards the particles negative charge would repel it downwards so its placed downwards to repel the negative charge upwards.

 

[Kanekii]

How?
Is the answer A for 24?

 

[hellodjfos;s'ff]

this one please

There needs to be a force pulling the particle up to balance out the weight of the particle. The particle will continue to move horizontally if the vertical forces are balanced.
If you look at A, the electric field is downwards meaning the positive terminal is up and since the particle would be negatively charged, the positive terminal will apply a force to pull the electron up. This fits the idea I presented at the start, so A is the answer.
For B, it will be the opposite of option A. So the force acting on the electron will be in the direction of the weight so the electron will be pulled down(incorrect since it won't be solely left to right).
For option C and D, the particle will be pulled down again so the particle won't move left to right only. So they're incorrect too