# Attention

I, Rahil sehgal and Ankit Kumar made an whtsapp brillliant group. Interested persons can provide their whatsapp number. I will add you all

Note by Md Zuhair
1 year, 9 months ago

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Sort by:

- 1 year, 9 months ago

- 1 year, 9 months ago

@Md Zuhair @Rahil Sehgal @Ankit Kumar Jain - I also want to join. Please add me.

- 1 year, 9 months ago

Pls comment your contact number below so that I can add u. :)

- 1 year, 9 months ago

@Rahil Sehgal what all will you discuss in the group

- 1 year, 9 months ago

Please comment if you got it.

- 1 year, 9 months ago

Thanks...

I have added you in the group

- 1 year, 9 months ago

Thanks.

- 1 year, 9 months ago

@Md Zuhair @Rahil Sehgal - Can you please add me to the group too?

- 1 year, 8 months ago

You can comment your contact number below. Thanks.

- 1 year, 8 months ago

- 1 year, 7 months ago

What kind of group is it ? Formal one for physics and math problems ?

- 3 months, 3 weeks ago

Kind of.....

- 3 months, 3 weeks ago

Ohh okay!

- 3 months, 3 weeks ago

Quora misses you bro ;) How's your studies going? Also, tell me how are you motivating yourself everyday? And not to forget only one day left for this year to end LoL xD

- 2 weeks, 2 days ago

Well lets see... :)

- 2 weeks ago

Okay study harder bro!

- 2 weeks ago

Happy New Year!

- 2 weeks, 1 day ago

Happy new year!!!!

- 2 weeks ago

Are you still adding students ? BTW I'm a JEE aspirant and I'm quite new to brilliant(Using it just for 1-1.5 months)

- 1 week ago

+919903607651

- 1 week ago

no bro... actually i deleted Whatsapp 6-7 month before :P

- 6 days, 11 hours ago

Me too , thats my mom'd :p Btw , we can be friends !

- 5 days, 23 hours ago

Obviously. Friends with toppers like you would be a nice thing Id love to

- 5 days, 21 hours ago

What do you mean by "topper" ? -_- Do you even know me ?

- 5 days, 19 hours ago

- 5 days, 18 hours ago

That's nothing much I guess :p I see you are in South Point! I stay in Kolkata(30kms from it though) too ! I am in North Kolkata Fiitjee.

- 4 days, 19 hours ago

Arre... Then I know you. I have a friend named Rishav Dugar. He said the you are the smaller version of Arka Das. So I know you that you are a topper!!!

- 4 days, 16 hours ago

:( Unfortunately people think that . I am nowhere close to him .

- 4 days, 16 hours ago

But u defeat him in some exams.

- 4 days, 15 hours ago

Defeat"ed" in some .My Exam temperament is completely broken , nowadays :(

- 4 days, 14 hours ago

https://brilliant.org/problems/too-many-lenses/?ref_id=1559097

- 4 days, 1 hour ago

I tried it this way. Taking the lens to be thin. I found the number of lens it will overcome until it reaches 3.925cm . Now taking the equivalent of all those lenes we ge the point where the ray would have passed if there were no further lens cutting the principal axis (focal pt) . Ebar....Using perpendicular/base.... =Tan theta(theta is angle b/w ray and principal axis). We can find out the height. If I am wrong somewhere.... Plz correct me. My answer is not matching.

- 4 days ago

The exact answer is $$y = hcos(\frac{x}{\sqrt(lf)})$$

- 3 days, 19 hours ago

Oh so we need to find out the exact path of ray. I thought approximation would work

- 3 days, 17 hours ago

Ya

- 3 days, 16 hours ago

https://brilliant.org/problems/when-einstein-meets-huygens/

I have solved this , but I want to know if there is any better solution than what i have done ! Help me.

- 21 hours ago