Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • A particle of charge q and mass m is projected with a velocity <img alt=

A particle of charge q and mass m is projected with a velocity v_0 towards a circular region having witorm magnetic field B perpendicular and into the plane of paper form point P as. R is the radius and O is the centre, The value of v_0 so that particle passes through O is -

Option: 1

\frac{q B R}{m \sin \theta}


Option: 2

\frac{qBR}{2m \sin \theta}


Option: 3

\frac{2 q B R}{m \sin \theta}


Option: 4

\frac{3 q B R}{2 m \sin \theta}


Answers (1)

best_answer

If the particle pase es through O, the situation can be shown. Let r the radius of circular path then from the given.

\sin \theta=\frac{R / 2}{r}=\frac{R}{2 r} \Rightarrow r_0=\frac{m v}{q B}

\sin \theta=\frac{Rq B}{2 m v}

v_0=\frac{qBR}{2m \sin \theta}

Posted by

Devendra Khairwa

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JoSAA 2025 reconstituted; NIT Rourkela to coordinate BTech counselling for IITs, NITs, IIITs
anam-khan

JEE Main 2025: BTech Information Technology cut-offs at NITs; know opening, closing ranks
anam-khan

JEE Main 2025: BTech Computer Science Engineering cut-offs at NITs went up this year

Latest Question