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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।

PhysicsThe dipole moment remains unchanged. The electric field is doubled, and the angle changes from 90° to 30°. What happens to the torque?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsA dipole moment is doubled, and the angle changes from 30° to 90°. In the same electric field, by what factor does the torque change?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsIf the torque on a dipole is maximum, which conclusion is correct?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsIf the torque on a dipole is zero, which conclusion cannot be established from this fact alone?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsIf a dipole moves from unstable equilibrium to stable equilibrium, what is the work done by the electric field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsIf a dipole is moved slowly from stable equilibrium to unstable equilibrium, what is the external work done?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsUnder which condition will a dipole have zero net force and minimum potential energy?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsUnder which condition will a dipole have zero net force and maximum torque?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsIf the dipole moment and the external electric field are in opposite directions, which statement is correct?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsIf the dipole moment and electric field are in the same direction, which statement about torque and potential energy is correct?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Medium PhysicsWhat directional relation is shown by the vector form of torque on a dipole in a uniform electric field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Medium PhysicsIf the dipole moment becomes half and the electric field becomes four times, what happens to the magnitude of energy at the same angle?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Medium PhysicsIf the dipole moment is doubled and the electric field is tripled while the angle remains the same, what happens to the torque and the magnitude of potential energy?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Medium PhysicsA dipole is in unstable equilibrium. When it is slightly displaced, what is the nature of the torque?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Medium PhysicsA dipole is in stable equilibrium. When it is rotated through a very small angle, what is the nature of the torque?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Medium PhysicsThe net force on a dipole in a uniform electric field is zero. If it is placed at an angle, what causes its rotation?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Medium PhysicsWhat is the change in energy when a dipole is rotated from 30° to 150° if the product of dipole moment and field is 20 J?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Hard PhysicsIf the angle between the dipole moment and the electric field changes from 60° to 120°, what happens to the sign of potential energy?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Medium PhysicsIf the angle between the dipole moment and the electric field changes from 60° to 120°, what happens to the magnitude of torque?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 10Medium PhysicsThe torque on an electric dipole in a uniform electric field is related to the vector product of which two vector quantities?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 12Medium