(a) Obtain the conditions under which an electron does not suffer any deflection while passing through a magnetic field.

(b) Two protons P and Q moving with the same speed pass through the       magnetic fields \vec{B_{1}} and \vec{B_{2}} respectively, at right angles to the field       directions. If \left | \vec{B_{2}} \right |> \left | \vec{B_{1}} \right |, which of the two protons will describe the       circular path of smaller radius? Explain.

 

 
 
 
 
 

Answers (1)
S safeer

(a) An electron does not suffer any deflection while passing through a magnetic field when it is parallel or anti-parallel to the magnetic field.

(b) The radius of the circular path

R=\frac{mv}{qB}

\frac{R_{1}}{R_{2}}=\frac{B_{2}}{B_{1}}

Or,

R\propto \frac{1}{B}                [\because m,v and q are constant or same ]

Thus as,

B_{1}< B_{2}

Hence,

R_{2}< R_{1}

Preparation Products

Knockout NEET May 2021

An exhaustive E-learning program for the complete preparation of NEET..

₹ 22999/- ₹ 14999/-
Buy Now
Knockout BITSAT 2020

It is an exhaustive preparation module made exclusively for cracking BITSAT..

₹ 4999/- ₹ 1999/-
Buy Now
Knockout NEET May 2022

An exhaustive E-learning program for the complete preparation of NEET..

₹ 34999/- ₹ 24999/-
Buy Now
Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
Buy Now
Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-
Buy Now
Exams
Articles
Questions