Physics for JEE/NEET : Timeless Thumb Rules

How can I improve my conceptual understanding of Physics?

Reading only one textbook for at least 2–3 times and solving all the numerical problems of that book. Also, modify those numerical problems, play with them! ….Then start with thought experiments. Also, engage with your teachers & parents.
How do I plan my 'study' to cover all the chapters for the JEE Physics without stress?
Step 1: 

Read HC Verma; solve all the questions. Don't worry if you can't solve all the questions. Just keep a track of those questions. Don't ask any doubts till the next 3 months. STOP using the INTERNET for the next 3 months. Get hold of a good mathematics book (ask your Mathematics teacher) and complete the first few chapters on Coordinate Geometry; Differential Calculus.
Step 2:
Armed with a lot of confusion & doubts, consult any teacher. If you need help after 3 months, message me. I'll help you! This is just my contribution for the universe.
Step 3:
By now, you must've understood a lot about JEE. Prepare your own strategy. OR read the success stories of top 100 rankers and get inspired to make a hybrid strategy.

As we know, the exam consists of multiple concepts. What would be the best preparation strategy for solving these questions?
Take it easy & slow. Don't try to solve the toughest questions from day 1. You are no Einstein, or else you wouldn't have been looking for answers to the above question on a public platform. Try to grasp the topics and make them part of your life. For the first six months only read, read & read more...

After six months start solving questions. If you face any problems, read again...

Gradually move on to Multiple Choice Questions (MCQ or Objective) ... Develop a winning strategy which works for you. Everybody has their own approach to solving the problems of any exam or ...err life.

Which books to follow?
For Physics - H.C. Verma & NCERT are more than sufficient 
A WORD OF CAUTION : Stop reading Books which turn JEE questions into theory!
Would you take an advice from a physics faculty? Worship HC VERMA like Bible/Geeta/Quran .... rest will follow. In other words, understand every word, punctuation, etc. written in the book. You will surely ace the physics portion of current JEE papers

Find below my brief video on physics preparation strategy for JEE or NEET

 

 You can also check all my JEE or NEET preparation videos below

Catch-all and Destiny : Just a Matter of Measurement

Is there anything called Destiny?

Source : https://towardsdatascience.com/how-are-logistic-regression-ordinary-least-squares-regression-related-1deab32d79f5

In linear regression, ε(random error term) here is the catch-all for whatever we are missing out by not measuring & capturing in the model[1].
This means there is scope for improvement and making the model less random. So, as we keep on including more independent variables (predictors/features) our model would have less random error.

Now, how is all this connected to destiny, you may say? Well, in that case, please watch the video at the top of the post again.

Here, Sadhguru[2] says that a lot of events were attributed to 'destiny/God's will' in the era gone by, as they didn't have access to science & technology in the scale we have access to, currently.
Now, we can pretty much point out causes of illness/accident/death/... to something known to us.
So, this is a measurement problem and not some esoteric idea of Destiny.
In other words, "what's gets measured gets managed"

In essence, this is what modern machine learning & AI is also about. They keep on studying tons of data to come up with better models. What the model can't explain is error or catch-all or Destiny (if I may say so!)

Book Suggestions Below:
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[Live Blog]:Madhya Pradesh, Chhattisgarh, Rajasthan, Mizoram & Telangana Election Results 2018

Final Results [11:01 AM, 12 December 2018]

Madhya Pradesh(230)			Chhattisgarh(90)
BJP	109		BJP	15
Congress	114		Congress	68

Rajasthan(199)			Telangana(119)
BJP	73		TRS	88
Congress	99		Congress	19

Mizoram(40)
MNF	26
Congress	5

BSE Sensex has risen by more than 500 points since 11 October 9:15 AM, while NIFTY has risen more than 150 points in the same period.

Let's see who becomes the CM in these respective states.

2:50 PM, 11 December 2018

Madhya Pradesh(230)			Chhattisgarh(90)
BJP	108		BJP	16
Congress	110		Congress	67

Rajasthan(200)			Telangana(119)
BJP	70		TRS	84
Congress	104		Congress	22

Mizoram(40)
MNF	25
Congress	6

As of now, the BJP has clearly lost its power in Rajasthan & Chhattisgarh. Madhya Pradesh would be a nail-bitter finish as expected earlier in my prediction.

BSE SENSEX

INDEXBOM: SENSEX

35,115.14 +155.42 (0.44%)

NIFTY 50

NSE: NIFTY

10,542.20 +53.75 (0.51%)

And the market seems to like it.

10:02 AM, 11 December 2018

Madhya Pradesh(230)			Chhattisgarh(90)
BJP	98		BJP	24
Congress	101		Congress	54

Rajasthan(200)			Telangana(119)
BJP	74		TRS	86
Congress	100		Congress	20

Mizoram(40)
MNF	21
Congress	9

BSE SENSEX

34,599.14 −360.58 (1.03%)

NIFTY 50    [NSE: NIFTY]

10,386.20 −102.25 (0.97%)

8:53 AM, 11 December 2018

Madhya Pradesh(230)			Chhattisgarh(90)
BJP	19		BJP	15
Congress	25		Congress	13

Rajasthan(200)			Telangana(119)
BJP	26		TRS	19
Congress	40		Congress	10

Mizoram(40)
MNF	2
Congress	0

Stock Markets yet to open

Madhya Pradesh (MP) Elections, 2018 : Result Prediction [Updated]

Election results predictions are always a difficult thing to get right. However, we all can at least know what to expect from a result; the mood of analytics (as I would like to speak)

Let's look at numbers from opinion polls

Date	Polling agency	BJP	INC	Rest
4 April 2018	IBC24	101	119	10
14 August 2018	ABP News- C Voter	106	117	7
9 October 2018	Times Now - Warroom Strategies	142	77	11
9 October 2018	Times Now - Chrome DM	108	103	19
10 October 2018	News Nation	111	109	10
17 October 2018	ABP News- C Voter	108	122	–
25 October 2018	IndiaTV - CNX	128	85	17
02 November 2018	ABP News- C Voter Survey	106	118	6
08 November 2018	Graphnile	60	160	10
09 November 2018	Cvoter	107	116	7
09 November 2018	ABP News- CSDS	116	105	9
09 November 2018	Timesnow - CNX	122	90	18
Average as on 9 November 2018		113	107	10

Image : Wikipedia [https://en.wikipedia.org/wiki/Madhya_Pradesh_Legislative_Assembly_election,_2018]

If you are unable to fathom so as to what is going on, probably you are a chart/diagram person. So, let's look at it graphically:

Here, it's clearly showing that there is hardly anything to choose between either of the parties. 'BJP Gain' means how many more seats BJP is going to get as per the current opinion poll compared to the last poll. Negative gain or loss hasn't been represented. Similarly for Congress you have INC gain.

Although, you might feel that BJP has seen a sharp surge in the run up to elections, that could be just an illusion of how the data is represented by agencies and me.

Let's look at more graphics


And one more:

Source : https://www.crowdwisdom.co.in/MP/Home?a=2


This clearly paints the picture clear that BJP is not getting a simple majority if we believe the numbers which we have. That being said, it's not Congress's gain either.

Apart from these, I have my own way of getting to predictive aspect of anything using my 'Optimistic-Pessimistic-Most Likely Estimate'. More on the technical details and intuitions behind the estimate later. As of now, let's just chew in what my estimator has to say:

-->

BJP		INC
Optimistic	150		170
Pessimistic	50		70
Most Likely	107		94
Prediction	102		111

So, Congress(INC) is going to fall short by around 5-10 seats. Well, even BJP can from the government if they manage some sort of post poll alliance. Certainly, no one can predict with an omniscient accuracy. Everything will be clear in less than a week's time. Till then we can only predict.


Places you might want to go to know more about Madhya Pradesh (MP) Elections, 2018 : Result Prediction
1. High polling means vote for BJP? [https://goo.gl/eUn1tj]
2. Google Trends [https://goo.gl/qGUkik]
3. Can Congress Defeat BJP In MP Election, Know What Ganesha Says [https://goo.gl/XAgH6X]
4. Satta market speculates a likely win for Congress in Madhya Pradesh polls [https://goo.gl/GPgVEW]
5. Quora Answers [https://goo.gl/4FGk5n]

Of course, do check these links to come up with your own predictions.

Update for Exit Polls
Let's look at the pulse of polls, after exit polls.

Polling agency	BJP	INC	Others
Today's Chanakya	103	125	2
C Voter – Republic TV	106	118	6
Axis My India – India Today	111	113	6
News Nation	118	106	6
Jan Ki Baat– Republic TV	118	105	7
VDPA Associates	135	88	7
CSDS – ABP News	94	126	10
India News- NETA	106	112	12
CNX– Times Now	126	89	15
Poll of Polls	113	109	8

Image : Wikipedia [https://en.wikipedia.org/wiki/Madhya_Pradesh_Legislative_Assembly_election,_2018]

This shows nothing substantive apart from the fact that BJP & Congress(INC) are squeezing the seats out of other parties.

This is what my comprehensive 'Optimistic-Pessimistic-Most Likely Estimate' predicts:

BJP		INC
Optimistic	166		172
Pessimistic	69		74
Most Likely	109		99
Prediction	115		115

Ohho! Numbers can't get more close than this. Just in case, you want to know I'm trying to predict the outcome for BJP/INC hence, ignored the upside for regional parties. That being said, you can hardly say who will form the government? Let the machinations begin!