NEET UG Magnetism — practice questions
89 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Magnetism in the app →A passenger standing in a bus is thrown backward when the bus suddenly starts moving forward. This is best expOne newton is defined as the force that gives a mass of 1 kg an acceleration of:The linear momentum of a body is defined as the product of its:The impulse of a force has the same dimensions as:The action and reaction forces of Newton's third law:For a given pair of surfaces, the coefficient of kinetic friction is usually:A constant force of 20 N acts on a 5 kg body initially at rest. Its speed after 3 s is:A 0.15 kg ball moving at 12 m s⁻¹ is hit straight back along its path with the same speed. The magnitude of thA 0.04 kg bullet moving at 90 m s⁻¹ is stopped after penetrating 0.6 m into a block. The average resistive forA box rests on the floor of a truck with coefficient of static friction 0.15. The maximum acceleration of the A block just begins to slide down an incline when the angle of inclination is 30°. The coefficient of static fA 0.02 kg bullet is fired with a speed of 300 m s⁻¹ from a 4 kg gun. The recoil speed of the gun is:A 50 kg person stands on a weighing scale inside a lift accelerating upward at 2 m s⁻² (g = 10 m s⁻²). The scaA 0.5 kg stone tied to a string is whirled in a horizontal circle of radius 2 m at a speed of 4 m s⁻¹. The tenThe maximum speed at which a car can round an unbanked circular turn of radius 150 m without skidding is (μs =A 3 kg block hangs from a light string passing over a frictionless pulley and pulls a 20 kg trolley along a hoFor a 3 kg block connected over a frictionless pulley to a 20 kg trolley (μk = 0.04, g = 10 m s⁻²), the tensioA 6 kg mass hangs from a light rope. A horizontal force of 50 N is applied at the rope's midpoint (g = 10 m s⁻One ball strikes a wall normally and rebounds with unchanged speed; an identical ball strikes at 30° to the noA net force F = 6t newton (t in seconds) acts on a 2 kg body initially at rest. The speed of the body at t = 4A block slides down a rough incline of 30° with coefficient of kinetic friction 0.2 (g = 10 m s⁻²). Its acceleA lift descends with a downward acceleration equal to g. The apparent weight of a passenger standing inside isA 10 N horizontal force is applied to a 2 kg block that pushes a 3 kg block in contact with it on a frictionleA 0.2 kg ball strikes the floor vertically at 10 m s⁻¹ and rebounds at 8 m s⁻¹. The magnitude of the impulse iThe optimum (design) speed for a car on a frictionless road banked at 45° along a curve of radius 100 m is (g A bar magnet is cut into two equal halves perpendicular to its length. Each half has:The angle between magnetic north and geographic north at a place is called:A bismuth bar near a strong magnet on the lab table is:Above the Curie temperature, a ferromagnetic material:The pattern of iron filings suggests that a bar magnet is a magnetic:A freely suspended bar magnet comes to rest pointing in which direction?Isolated magnetic north and south poles are known as magnetic:Magnetic field lines of a magnet or a solenoid form what kind of loops?Substances that get weakly magnetised in an external field are called:Substances that get strongly magnetised in an external field are called:Diamagnetic substances tend to move from the stronger part of a field to the:Inside a diamagnetic material, the field lines are expelled and the field is:Paramagnetic substances get weakly attracted towards which region of a field?The dimensionless quantity relating magnetisation to magnetic intensity is the magnetic:The quantity given by one plus the susceptibility is called the relative magnetic:In a ferromagnetic material, atoms spontaneously align over a macroscopic volume called a:The Earth behaves as a magnet with its field pointing approximately from geographic:Why do magnetic field lines never intersect each other?A larger number of field lines crossing per unit area means the field is:What is the net magnetic flux through a closed surface around a magnet?Which of these is listed as a diamagnetic material?Which of these is listed as a paramagnetic material?A freely suspended bar magnet settles pointing:The tip of a magnet pointing to geographic north is its:Magnetic monopoles, according to the text:Cutting a bar magnet in half gives:Magnetic field lines of a bar magnet form:A bar magnet behaves like a magnetic:Substances repelled by a magnetic field are:Materials are classified by which quantity?Substances that are weakly magnetised in a field are:Substances that are strongly magnetised in a field are:A ferromagnet is divided internally into regions called:In an unmagnetised ferromagnet, the domains are:Applying a field makes the domains:Above a certain temperature, a ferromagnet becomes a:The Earth's magnetic field runs approximately from geographic:A bar magnet can be modelled as a large number of:The magnetic moment of a bar magnet equals that of an equivalent:Inside a diamagnetic material, the field is:Diamagnetism arises in atoms whose electrons have no net:Field lines of a bar magnet differ from an electric dipole's because they:Magnetic field lines give a realisation of the field that is:Magnetic field lines of a magnet or solenoid form loops that are:Electric dipole field lines differ because they begin at a charge that is:The tangent to a field line at a point gives the field's:A current loop is shown to behave as a:Ampere's hypothesis explains magnetism in terms of currents that are:The magnetic dipole moment of a current loop uses turns, current and:A bar magnet may be thought of as many circulating currents like a:Cutting a bar magnet in half is compared to cutting a:Field lines emerge from one face of a solenoid and enter the:The net magnetic flux through any closed surface is:For a closed surface in a magnetic field, lines leaving equal lines:A magnetic needle in a field experiences a:The restoring torque on a displaced needle opposes the torque that is:A needle displaced in a magnetic field is allowed to:Magnetisation of a sample is its net magnetic moment per unit:In a bulk material the atomic magnetic moments add up:The magnetic moment inside an atom comes from an electron that is:Among susceptibility, permeability and relative permeability, how many are independent?Magnetic susceptibility values in the table are quoted at:The hysteresis loop is a curve plotting B against:Susceptibility is used to classify materials as diamagnetic, paramagnetic or: