Biology; Chemistry; Physics: Post your doubts here!

[Awesome12]

Glass prism has a higher refractive index than air, which means light travels slower in there. When white light enters the prism, it changes direction because of the slower speed. Red and blue have difference wavelengths and frequencies so they change directions by different amounts. Due to this, the angles of refraction are different and they split up.

I wrote that the glass prism has a higher refractive index which means it is denser. When the white light enters, it refracts towards the normal. Red light produces less bending, whereas blue light produces more bending. Also that they have different wavelengths. When they leave, they bend away from the normal, again different bending. Difference in the angle of refraction present

 

[afrolina]

Isn't it anything related to..."Greater the angle of refraction, the les the refreactive index. As, refractive index = sin I/sin R ??

 

[asadalam]

I wrote that the glass prism has a higher refractive index which means it is denser. When the white light enters, it refracts towards the normal. Red light produces less bending, whereas blue light produces more bending. Also that they have different wavelengths. When they leave, they bend away from the normal, again different bending. Difference in the angle of refraction present

Ditto copy of mine

 

[Abdul Hanan]

Ditto copy of mine

mine too

 

[The Frozen_nightmare]

What did you write for the why the larger piston have a smaller length

 

[Awesome12]

What did you write for the why the larger piston have a smaller length

It was why does it move a smaller distance.
I wrote that a larger pressure is exerted on the small piston as its cross-sectional area is smaller

 

[Abdul Hanan]

It was why does it move a smaller distance.
I wrote that a larger pressure is exerted on the small piston as its cross-sectional area is smaller

same here

 

[asadalam]

I wrote it moves a small distance to allow maximum energy transfer to the arm,as longer distance would mean more friction between piston and cylinder and less efficiency.

 

[Awesome12]

Does anyone know the weight-age of the papers, and how exactly do you calculate your grade according to that?

 

[asadalam]

Does anyone know the weight-age of the papers, and how exactly do you calculate your grade according to that?

20.7 P4
51.6 P2
Rest P1

You can calculate but in the end its all about the percentile.

 

[Dream.Eater]

It was why does it move a smaller distance.
I wrote that a larger pressure is exerted on the small piston as its cross-sectional area is smaller

What you mean I think is a larger force since pressure is t same on both pistons right????
Anyways I too wrote that the larger one has a greater cross section area

 

[Faizan Muhammmad]

For piston I wrote, work done is same so if force increased distance decreased
For refractive index I said refractive index for blue is more I did that because angle of refraction was less and it is inversely proportional to sin r

 

[funky brat]

Why was it accelerating while turning?

You don's say.

 

[funky brat]

For piston I wrote, work done is same so if force increased distance decreased
For refractive index I said refractive index for blue is more I did that because angle of refraction was less and it is inversely proportional to sin r

Refractive index is not of the light it's of the glass, how can you?

 

[asadalam]

You don's say.

Wut

 

[Faizan Muhammmad]

Refractive index is not of the light it's of the glass, how can you?

I meant for the glass
sin i/ sin r different thee, main kya karta?

 

[funky brat]

Both the papers were very easy.
Got an mcq wrong in paper1, wo beta wala, I knew it was electron and travelled 10-100cm in air, but dunno why did C.

 

[Faizan Muhammmad]

Refractive index is not of the light it's of the glass, how can you?

waisay bhee its ratio to speed in vacuum to glass
you know the speed of light in glass is different for different colours
so the ratio must be too

 

[asadalam]

Both the papers were very easy.
Got an mcq wrong in paper1, wo beta wala, I knew it was electron and travelled 10-100cm in air, but dunno why did C.

I am dissapoint

 

[Faizan Muhammmad]

Both the papers were very easy.
Got an mcq wrong in paper1, wo beta wala, I knew it was electron and travelled 10-100cm in air, but dunno why did C.

yeah