Physics: Post your doubts here!

[nehaoscar]

I can't thank you enough, for answering all my questions But Thaaaaank youuuuuu, seriously.

Actually, in the relay part I am still a bit confused if you could help me out, it would amazing.
I have elaborated my doubt in conjunction with your explanation

View attachment 59349
Thanks, once again.

So when there's a change in magnetic flux in the coil an emf is induced. now the + terminal is at the bottom and - at top hence d1 would conduct if d2 wasn't present and it's likely that this would damage the op-amp
So d2 is there so that it conducts the current induced around the circuit without it flowing back through d1 so op-amp is not damaged
I hope you understand?

 

[nehaoscar]

From where did u get this?

Google xD

 

[Catherine_1]

View attachment 59360
So when there's a change in magnetic flux in the coil an emf is induced. now the + terminal is at the bottom and - at top hence d1 would conduct if d2 wasn't present and it's likely that this would damage the op-amp
So d2 is there so that it conducts the current induced around the circuit without it flowing back through d1 so op-amp is not damaged
I hope you understand?

Yeah i did. Thank youuu so much!

 

[nehaoscar]

http://maxpapers.com/wp-content/uploads/2012/11/9702_w09_qp_42.pdf
Q11 - b - ii
Why is f 10 kHz when the time period of info signal is 200??
Konstantino Nikolas I remember you had the same doubt once... did you understand why it is this way ?? if so plss explain

 

[The Sarcastic Retard]

Google xD

Like what made u google this?

 

[nehaoscar]

Like what made u google this?

She had a doubt for the rms value so just to show that I0/root2 is not applicable for all types of graphs

 

[Konstantino Nikolas]

http://maxpapers.com/wp-content/uploads/2012/11/9702_w09_qp_42.pdf
Q11 - b - ii
Why is f 10 kHz when the time period of info signal is 200??
Konstantino Nikolas I remember you had the same doubt once... did you understand why it is this way ?? if so plss explain

lol yes I got that
Unfortunately, our understanding of adding the signal wave to the carrier wave in amplitude modulation is itself wrong. Watch this:

So you see, the wavelength of the signal is actually 100 ... not 200. Hope you get it ... it's simple, just a small misunderstanding.

 

[The Sarcastic Retard]

She had a doubt for the rms value so just to show that I0/root2 is not applicable for all types of graphs

did u know it already?

 

[nehaoscar]

did u know it already?

Yeah

 

[nehaoscar]

lol yes I got that
Unfortunately, our understanding of adding the signal wave to the carrier wave in amplitude modulation is itself wrong. Watch this:

So you see, the wavelength of the signal is actually 100 ... not 200. Hope you get it ... it's simple, just a small misunderstanding.

Ohhh alright! Thanks

 

[Annarophic]

Guys can anyone give me the basic concept of the newly added 'Band theory' in physics 2016 syllabus.

 

[nehaoscar]

Pfa the file that explains the band theory

 

[Konstantino Nikolas]

Ohhh alright! Thanks

yeah that simple
np

 

[The Sarcastic Retard]

Yeah

Howwwwwwwwww??

 

[nehaoscar]

Howwwwwwwwww??

My teacher had taught

 

[The Sarcastic Retard]

My teacher had taught

I wish I had same teacher as yours...

 

[The Sarcastic Retard]

 

[The Sarcastic Retard]

I could do these.

Doubt in c part. unsuccessful in doing this. :/

 

[The Sarcastic Retard]

Electric field strength = -ve potential gradient right then y ms says :

The sasme question, how will be the graph?

 

[The Sarcastic Retard]

Part (c) May be I know but IDK how to explain it. :/ opposite charges repel thats what all I have to say