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Which of the following particle will hav...

Which of the following particle will have minimum frequency of revolution when projected with the same velocity perpendicular to a magnetic field?

A

electron

B

proton

C

`He^(+)`

D

`Li^(+)`

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The correct Answer is:
D
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Which of the follwing particles will have minimum frequency of revolution when projected with the same velocity perpendicular to a magnetic field?

Which of the follwing particles will have minimum frequency of revolution when projected with the same velocity perpendicular to a magnetic field?

The path of a charged particle in a uniform magnetic field depends on the angle theta between velocity vector and magnetic field, When theta is 0^(@) or 180^(@), F_(m) = 0 hence path of a charged particle will be linear. When theta = 90^(@) , the magnetic force is perpendicular to velocity at every instant. Hence path is a circle of radius r = (mv)/(qB) . The time period for circular path will be T = (2pim)/(qB) When theta is other than 0^(@), 180^(@) and 90^(@) , velocity can be resolved into two components, one along vec(B) and perpendicular to B. v_(|/|)=cos theta v_(^)= v sin theta The v_(_|_) component gives circular path and v_(|/|) givestraingt line path. The resultant path is a helical path. The radius of helical path r=(mv sin theta)/(qB) ich of helix is defined as P=v_(|/|)T P=(2 i mv cos theta) p=(2 pi mv cos theta)/(qB) Which particle will have minimum frequency of revolution when projected with the same velocity perpendicular to a magnetic field.

Which of the following particles will describe the smallest circle when projected with the same velocity perpendicular to a magnetic field?

Which of the following particles will describe wll experience maximum magnetic force(magnitude) when projected with the same velocity perpendicular to a magnetic field?

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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IA
  1. A proton of mass m and charge q enters a magnetic field B with a veloc...

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  2. The correct curve between the magnetic induction (B) along the axis of...

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  3. Which of the following particle will have minimum frequency of revolut...

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  4. An insulating rod of length I carries a charge q distrubuted uniformly...

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  5. Two similar coaxial coils, separated by some distance, carry the same ...

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  6. A magnetic dipole with magnetic moment M is placed at right angles to ...

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  7. Arrange the following in asending order of magnetic induction at a poi...

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  8. The magnetic field in a straight current carrying conductor wire is:

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  9. Statement (A) : Ampere's law states that the line integral of vecB.vec...

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  10. Which of the following graphs represent variation of magnetic field B ...

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  11. A current flows in a conductor from east to west. The direction of the...

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  12. The strength of magnetic field around an infinitely long current carry...

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  13. A vertical straight conductor carries a current vertically upwards. A ...

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  14. A current I flows along an inflinitely long straight thin walled tube....

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  15. The magnetic field due to a straight conductor of uniform cross sectio...

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  16. A current I(1) carrying wire AB is placed near another long wire CD ca...

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  17. Magnetic field at a distance a from long current carrying wire is prop...

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  18. Two equal electroic currents are flowing perpendicular to each other a...

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  19. A very long straight wire carries a current I. At the instant when a c...

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  20. A closed loop PQRS carrying a current is placedin auniform magnetic fi...

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