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Problems on Locus (Part-I)
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In this video, we discuss important questions related to the Locus with the combination of other chapters too.

Sachin Rana is teaching live on Unacademy Plus

Sachin Rana
IVth Year UG, IIT Bombay | YouTuber (143k subs) | Mentored 3 under 100 ranks in JEE Advanced | No. 1 educator for Organic Chemistry.

Comments
(13)
U
Unacademy user
sir third row ur second column pe 1 hai uska cofacter -5 hona chahiye
Nitish Kumar
7 months ago
- se multiply bhi hona hai...recheck kr lo aap
Q2 answer is wrong because point A is on left of point B so it's x coordinate should be less than 2
How have you marked an Obtuse angle as 45°??
PS
how y=4+8/√2 came(last step)
Equation of reflected Ray is 4x-3y-4=0 . The reflected Ray passes through the focus of the parabola.
Aditya Singh
a year ago
in 2 Q reflected ray is parallel to x axis. HOW????😢😢😢
You can use the concept of physics.. that for any Ray to pass through the focus of a concave surface the Ray should come from infinity, hence parallel to x-axis ( and it's mentioned in the question that the Ray originates from (2,0) which is the focus of the parabola) .
Sachin Rana
a year ago
Correct answer. Good.
Thank you 😊😄
Aditya Singh
a year ago
Ooooo
Harish Sridhar
a year ago
But the focus lies on (1,0) isn't it?
If you are asking about the homework question which sir has given at the end.. then it's correct.
Harish Sridhar
a year ago
Yes, the same homework question. :)
Ookie ;-)
ans of hw is 4x-3y-4=0
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