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Class 12 Mcq

Class 12 Physics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

PhysicsNet force on a dipole in a uniform field is zero. Does it mean forces on both charges are zero?Class 12Chapter1: Electric Charges and FieldsDipole in a Uniform External FieldLevel 20Hard PhysicsIf dipole moment becomes three times and the distance of a far point becomes three times, what fraction of the far field remains?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Hard PhysicsFor the far axial field of a dipole, the dipole moment is doubled and the distance is doubled. What happens to the field?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Hard PhysicsWhy does the far field of a dipole decrease faster than the field of a point charge?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Hard PhysicsWhen a surface is perpendicular to the electric field and the area vector is along the field, why is flux maximum?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Medium PhysicsIf a surface is parallel to the electric field, what is the angle between the area vector and the electric field?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Easy PhysicsSurface area becomes double, electric field becomes triple and angular factor becomes half. What happens to the flux?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Medium PhysicsIf electric field is not perpendicular to a surface, what is the most common mistake while calculating flux?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Medium PhysicsA dipole is antiparallel to the field. If slightly rotated, why does it not return?Class 12Chapter1: Electric Charges and FieldsDipole in a Uniform External FieldLevel 20Medium PhysicsA dipole is parallel to the field. If slightly rotated, why does it tend to return?Class 12Chapter1: Electric Charges and FieldsDipole in a Uniform External FieldLevel 20Medium PhysicsIn a uniform field, net force on a dipole is zero. Still why does its energy depend on angle?Class 12Chapter1: Electric Charges and FieldsDipole in a Uniform External FieldLevel 20Medium PhysicsWhy is permanent dipole moment zero in a non-polar molecule when no external field is present?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Medium PhysicsWhy does a polar molecule tend to align in an external uniform electric field?Class 12Chapter1: Electric Charges and FieldsDipole in a Uniform External FieldLevel 20Medium PhysicsA dipole has zero net charge, yet how can its dipole moment be non-zero?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Easy PhysicsIf charge of a dipole is halved and separation is made four times, what happens to dipole moment?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Medium PhysicsIf both the charge magnitude and separation of a dipole are doubled, what happens to the dipole moment?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Medium PhysicsNear the centre of a dipole, field lines go from positive to negative. In which direction is the dipole moment of the same dipole taken?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Medium PhysicsWhy is the net field on the equatorial line of a dipole opposite to the dipole moment?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Hard PhysicsAt the same far distance, what is the relation between the axial and equatorial field magnitudes of a dipole?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Hard PhysicsAt a far equatorial point of a dipole, if the distance is tripled, what fraction of the field remains?Class 12Chapter1: Electric Charges and FieldsElectric Flux and Electric DipoleLevel 20Hard