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Sachin Rana

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

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Moosa Iqbal

3 years ago

Doubt :
In the definition of Total internal reflection, you have written that "when a ray of light goes from rarer to denser medium"........
but i think it should be opposite "TIR occurs when ray goes from denser to rare medium."Please correct me if i am wrong.
Thank you.

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Riya sharma

2 years ago

yes, TRI occurs when light travels from denser to rarer medium. I too had the same doubt but later I confirmed it from different sources.

Moosa Iqbal

2 years ago

Thanks !!!

Ashish Mishra

2 years ago

yeah

Abantika Karmakar

a year ago

Sir, is the image : (y+2)^2 = -(x+3). Using the fact that the line containing the image is perpendicular to the mirror and will have slope 1 we can consider some point on the image and putting that back in the equation of the parabola given to get the image.

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Sachin Rana

a year ago

Yes, correct. Very good.

Aditya Singh

a year ago

let the equation of parabola is x=ay^2+by+C assume some point on given parabola find its image and pit it in the equation the find the value of a b c

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Sachin Rana

a year ago

I believe this won't be the correcr method. 3 variables.

Aditya Singh

a year ago

but my answer is right sir

Shreyas Raibole

5 months ago

assume x to be some variable and rewrite y in terms of it

Jessica Gulati

a year ago

(y+2)^2=-(x+3)
Assume the points on parabola, then find the image
After find image remove the parameter that we have assumed and the equation obtained will be our required image

1

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Sachin Rana

a year ago

Yes, correct. Very good.

FR

Faizan Raza

a year ago

Sir ,if the question was asked for a point at maximum distance instead of minimum distance then how shall we proceed?

1

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Udaykumar Chetla

a year ago

(y+2) whole square = -(x+3

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