Physics-
General
Easy

Question

A particle having charge q enters a region of uniform magnetic field stack B with rightwards arrow on top (directed inwards) and is deflected a distance x after travelling a distance y. The magnitude of the momentum of the particle is:

  1. fraction numerator q B y over denominator 2 end fraction    
  2. fraction numerator q B y over denominator x end fraction    
  3. fraction numerator q B over denominator 2 end fraction open parentheses fraction numerator y to the power of 2 end exponent over denominator x end fraction plus x close parentheses    
  4. fraction numerator q B y to the power of 2 end exponent over denominator 2 x end fraction    

The correct answer is: fraction numerator q B over denominator 2 end fraction open parentheses fraction numerator y to the power of 2 end exponent over denominator x end fraction plus x close parentheses

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