Bro just watch this video, then you will get that the ans is none of these, the correct ans is twice the ans that you are claiming...

Or if i try to make understand then,

Just place four quarters of same charge density per unit area to make a disk, as u know the result of the disk so just divide it by 4 as all four quarters are identical to every point on the axis... Apply this in your question.. hope this will help..

Cause the application of gauss law.. i didnt get it here

0

Dheeraj Bansal

Apr 8, 2020

We are considering a sphere of radius R for gaussian surface
Surface area - 4(pie)r^2

https://doubtnut.com/question-answer-physics/the-quarter-disc-of-radius-r-see-figure-has-a-uniform-surface-charge-density-sigma-a-find-electric-p-15159882Bro just watch this video, then you will get that the ans is none of these, the correct ans is twice the ans that you are claiming...

Or if i try to make understand then,

Just place four quarters of same charge density per unit area to make a disk, as u know the result of the disk so just divide it by 4 as all four quarters are identical to every point on the axis... Apply this in your question.. hope this will help..

Cause the application of gauss law.. i didnt get it here

We are considering a sphere of radius R for gaussian surface Surface area - 4(pie)r^2