Well frnds, I wanna share something wid u all......I hav got 20 percentile in Fiitjee Open Test.....I am really shocked.....I donno what to do??? ......I am very scared to c my parents disappointed from me......hence i haven't told them about this.....I don't know whether I shall qualify IIT or not.......though I am working very hard for that.....I am really feeling demoralised.......I hav tried my level best to improve but to no avail......two to three months ago I used to get 4th or 5th rank in Fiitjee phase tests( I am in regular classroom program).....But I donno what has happened to me......Now I don't remeber what I studied in inorganic chem.....can't make many mechanisms in organic......trignometry and coordinate geometry has got evaporated from my mind......and suddenly i ain't able to attempt electricity and magnetism problems which i used to do in class 12 few months ago.......I am really demoralised......I donno how to revise???

I am working hard but require a good planning and approach.......

 

Can anyone help this demoralised chap to get back on the right path???

I wud be grateful to u all....

I think the answer is 1

6 = 2^x.3^x+y

2.3 = 2^x.3^x+y

Comparing we get, x+y=1

I hopw my answer is correct....

If yes then plz rate ....

Frnds .......what is wattless current.......

In Brilliant package of AC, a question has been asked......

If a AC circuit has 0.7H inductor in series with a resistance of 200ohm

An AC source of 220V , 50 Hz is given...

Find the wattless component of current through the circuit.......

 

PLz explain what is wattless current.........

Is the answer 30.6cm???

Here consider liquid lens having one side plane and other side convex of radius R(which is to be found)
Then there glass lens which has one side plane and other side concave of radius R
Then use lens makers formula for both to find the individual focal length of each.....

1/f₁ = (_l-1)/R     (for liquid lens)

1/f₂ = -(_g-1)/R   (for glass lens)

 

Then since there is plane mirror......it's focal length is infinity

And since the ray of light is reflected we can write,

 

1/F = 2/f₁ + 2/f₂ + 0 = 0.34/R

Now this whole arrangement behaves as a mirror.....

Using mirror formula,

-1/180 + (-1/180) = -0.34/R

R= 30.4 cm

 

 

PLz rate if satisfied........and nudge me if any doubts r there.......

Hey guys I have almost completed my syllabus........

How shud I start revision.......I mean from which books shud I start revision.......

I shall soon get Fiitjee GMP and BT YG File.......And I don't think it is possible to do both.....So how shud I use these materials to the best......

 

And also I don't have classroom notes.......

So how shud I revise the topics.......if from books then from which books.......

Plz help me frnds......