A proton is projected with a speed of 2 × 10 6 m s - 1 at an angle 60 ∘ towards the x - axis . If a uniform magnetic field of 0 . 1 T is applied along the y - axis , the path of the proton is

a helix of radius 0 . 1 m and the time period 2 π × 10 - 7 s .

a circle of radius 0 . 2 m and the time period π × 10 - 7 s .

a circle of radius 0 . 1 m and the time period 2 π × 10 - 7 s .

a helix of radius 0 . 2 m and the time period 4 π × 10 - 7 s .

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A particle of charge $q$ and mass $m$ enters normally (at point $P$ ) in a region of magnetic field with speed $v$ . It comes out normally from $Q$ after time $T$ as shown in figure. The magnetic field $B$ is present only in the region of radius $R$ and is uniform as shown. Initial and final velocities are along radial direction and they are perpendicular to each other. For this to happen, which expression is correct?

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Important Questions on Moving Charges and Magnetism

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Practice Book for MHT-CET Physics (Magnetism and Electromagnetic Induction)>Chapter 1 - Moving Charges and Magnetism>Force Acting on a Charged Particle in Magnetic Field>Q 49

A charged particle is released from rest in a region of uniform electric and magnetic fields, which are parallel to each other. The locus of the particle will be a

EASY

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Practice Book for MHT-CET Physics (Magnetism and Electromagnetic Induction)>Chapter 1 - Moving Charges and Magnetism>Force Acting on a Charged Particle in Magnetic Field>Q 50

The charges $1, 2, 3$ are moving in a uniform transverse magnetic field. Then

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Practice Book for MHT-CET Physics (Magnetism and Electromagnetic Induction)>Chapter 1 - Moving Charges and Magnetism>Force Acting on a Charged Particle in Magnetic Field>Q 51

A charged particle moves through a magnetic field perpendicular to its direction. Then

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Practice Book for MHT-CET Physics (Magnetism and Electromagnetic Induction)>Chapter 1 - Moving Charges and Magnetism>Force Acting on a Charged Particle in Magnetic Field>Q 52

A proton, a deuteron and an

α

-particle having the same kinetic energy are moving in circular trajectories in a constant magnetic field. If

r_{p}, r_{d}

and

r_{α}

denote, respectively, the radii of the trajectories of these particles, then

EASY

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IMPORTANT

Practice Book for MHT-CET Physics (Magnetism and Electromagnetic Induction)>Chapter 1 - Moving Charges and Magnetism>Force Acting on a Charged Particle in Magnetic Field>Q 53

An electron is projected in vertically upward direction. If a uniform magnetic field acts from south to north, then it will be deflected

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MHT-CET

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Practice Book for MHT-CET Physics (Magnetism and Electromagnetic Induction)>Chapter 1 - Moving Charges and Magnetism>Force Acting on a Charged Particle in Magnetic Field>Q 54

α

-particle of

1 MeV

energy moves along a circular path in a uniform magnetic field. The kinetic energy of a proton in the same magnetic field for a circular path of double radius is

HARD

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IMPORTANT

Practice Book for MHT-CET Physics (Magnetism and Electromagnetic Induction)>Chapter 1 - Moving Charges and Magnetism>Force Acting on a Charged Particle in Magnetic Field>Q 55

A proton is projected with a speed of

2 \times 10^{6} m s^{- 1}

at an angle

60^{\circ}

towards the

x - axis

. If a uniform magnetic field of

0.1 T

is applied along the

y - axis

, the path of the proton is

EASY

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IMPORTANT

Practice Book for MHT-CET Physics (Magnetism and Electromagnetic Induction)>Chapter 1 - Moving Charges and Magnetism>Motion of a Charged Particle in Electric and Magnetic Field>Q 56

A charged particle moves in a magnetic field

\vec{B} = 10 \hat{i}

with initial velocity

\vec{u} = 5 \hat{i} + 4 \hat{j} .

The path of the particle will be

Important Questions on Moving Charges and Magnetism

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