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Physics Sample Paper Class 9 ICSE. We covered all the Physics Sample Paper Class 9 ICSE in this post for free so that you can practice well for the exam.
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Physics Simple mcqs of Class 9 ICSE for Students
When a charged particle travels through a uniform magnetic field, which statement best describes its motion?
a) Its momentum changes while its total energy stays constant
b) Both momentum and total energy remain unchanged
c) Both momentum and total energy change
d) Total energy changes but momentum remains unchanged
Option a – Its momentum changes while its total energy stays constant
An electrically neutral particle moves with speed v in a uniform magnetic field of strength B. What will be the magnetic force acting on it?
a) Maximum when v and B are along the same direction
b) Maximum when v is perpendicular to B
c) Zero
d) Maximum when v makes an angle of 45° with B
Option c – Zero
Neutrons enter a magnetic field B from different directions but with the same speed v. Which of the following is correct?
a) The force is maximum when the angle between v and B is 90°
b) The force is minimum when the angle between v and B is 90°
c) No magnetic force acts on neutrons
d) Neutrons with greater Mass experience a larger force
Option c – No magnetic force acts on neutrons
A proton moves with velocity v in the presence of both an Electric Field E and a magnetic field B. Under which condition will it move without deflection?
a) When E is perpendicular to B
b) When E is parallel to v and perpendicular to B
c) When both E and B are parallel to v
d) When E, v, and B are oriented at arbitrary angles
Option c – When both E and B are parallel to v
An electron is initially at rest in a region containing a non-uniform magnetic field. If it is released, what will happen?
a) It will move along the direction of the magnetic field
b) It will move opposite to the magnetic field direction
c) It will move perpendicular to the magnetic field
d) It will remain stationary
Option d – It will remain stationary
Electric and magnetic fields are directed along the same line. If an electron is projected in the same direction as these fields, what happens to its speed?
a) It increases
b) It decreases
c) Its direction changes
d) It remains constant
Option b – It decreases
An electron and a proton are projected perpendicular to a uniform magnetic field. Which statement correctly describes the magnetic forces acting on them?
a) Equal forces in the same direction
b) Unequal forces in the same direction
c) Equal forces in opposite directions
d) Unequal forces in opposite directions
Option c – Equal forces in opposite directions
The observation that an electric current produces a magnetic field was first made by:
a) Ampere
b) Oersted
c) Kelvin
d) Fleming
Option b – Oersted
The work done by a magnetic field on a moving charged particle is:
a) Zero, because the force acts parallel to the velocity
b) Positive, because the force acts perpendicular to the velocity
c) Zero, because the force acts perpendicular to the velocity
d) Negative, because the force acts parallel to the velocity
Option c – Zero, because the force acts perpendicular to the velocity
A charged particle moving with velocity v in a magnetic field B experiences zero magnetic force when:
a) The force is always zero
b) The force is never zero
c) v is perpendicular to B
d) v is parallel to B
Option d – v is parallel to B
When an electron moves with velocity v parallel to a magnetic field B, which of the following is true?
a) The magnetic force on the electron is zero
b) The electron moves in a circular path
c) The electron follows a parabolic trajectory
d) The electron comes to rest
Option a – The magnetic force on the electron is zero
We covered all the Physics sample paper Class 9 ICSE above in this post for free so that you can practice well for the exam.
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