If an electron and a proton having same momenta enter perpendicular to a magnetic field, then

  • Option 1)

    curved path of electron and proton will be same ( ignoring the sense of revolution)

  • Option 2)

    they will move undeflected

  • Option 3)

    curved path of electron is more curved than that of the proton

  • Option 4)

    path of proton is more curved.

 

Answers (1)

As we discussed in concept

Radius of charged particle -

r=\frac{mv}{qB}=\frac{P}{qB}=\frac{\sqrt{}2mk}{qB}=\frac{1}{B}\sqrt{}\frac{2mV}{q}

-

 

 

Bqv=\frac{mv^{2}}{r}\Rightarrow r=\frac{mv}{Bq}=\frac{p}{Bq}

r will be same for electron and proton as p , B and q are of same magnitude.


Option 1)

curved path of electron and proton will be same ( ignoring the sense of revolution)

Correct option

Option 2)

they will move undeflected

Incorrect option

Option 3)

curved path of electron is more curved than that of the proton

Incorrect option

Option 4)

path of proton is more curved.

Incorrect option

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