@JEE2020

@Sanjay_S

@Abhinav.08

@Seshank

@Aastik_Guru

pls help guys

ans is sigma/pi eplsilon

thanks

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Bro, this method should give the answer.

Firstly, midpoint is given so that there is no electric field along the axis of semi-cylindrical sheet. Now, we take diff. element at theta, and **we can find the charge density on it** (for this we’ll have to convert charge/area into charge/length which is standard). Now, electric field due to infinite wire gives E. We can take it’s components Ex and Ey, and then integrate. Integration of Ex from 0 to pi will be zero.

Integrating Ey will give the answer.

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