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A proton describes a circle of radius 1 cm in a magnetic field of strength 0.10 T. What would be the radius of the circle described by an `alpha`-particle moivng with the same speed in the same magnetic field?

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The correct Answer is:
B, C
`r=(mv)/(qB) rArr (m/q)_(D)=2(m/q)_(P)rArrr_(D)=2r_(P)=2cm`
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RESONANCE ENGLISH-ELECTRODYNAMICS-Exercise-1 PART-1
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  3. A proton describes a circle of radius 1 cm in a magnetic field of stre...

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  4. An electron having a kinetic energy of 100eV circulates in a path of r...

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  5. A proton is projected with a velocity of 3X10^6 m s ^(-1) perpendicula...

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  6. (a) An electron moves along a circle of radius 1m in a perpendicular m...

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  7. A particle of mass m and positive charge q, moving with a uniform velo...

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  8. A particle of mass m and charge q is projected into a region having ...

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  10. If two charged particles of same mass and charge are describing circle...

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  11. A uniform magnetic field of magnitude 0.20 T exists in space from e...

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  14. A particle having a charge of 5.0 mu C and a mass of 5.0 X 10^(-12)kg...

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  15. A proton projected in a magnetic field of 0.020 T travels along a heli...

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  16. An electron gun G emits electons of energy 2 keV travelling in the pos...

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  17. An electron beam passes through a magnetic field of 2xx10^(-3) Wb//m^(...

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  18. A conducting wire of length l, lying normal to a magnetic field B, mo...

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  20. A particle moves in a circle of diamater 1.0 cm under the action of ma...

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