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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।

PhysicsIf the potential energy of an electric dipole in a uniform field is zero, which statement about its angle and torque is correct?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf the torque on an electric dipole is zero and its potential energy is minimum, what is the position of the dipole?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf the torque on an electric dipole is zero and its potential energy is maximum, what is the position of the dipole?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf the angle of an electric dipole with a uniform electric field changes from 45° to 135°, which statement is correct?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf the angle of an electric dipole with a uniform electric field changes from 30° to 150°, which statement about torque and potential energy is correct?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf the dipole moment becomes three times and the electric field becomes half its original value, while the angle changes from 60° to 120°, what happens to the torque?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe dipole moment is halved and the electric field is increased eightfold. If the angle changes from 90° to 30°, how many times is the new torque compared with the old torque?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe dipole moment is doubled and the electric field is tripled. If the angle changes from 30° to 60°, how many times does the new torque become compared with the old torque?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsFor an electric dipole, pE = 32. If the torque is 16 and the potential energy is positive, what is the angle?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsFor an electric dipole, pE = 16 J. If the torque is 8 J in magnitude and the potential energy is negative, what is the angle?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe product pE for an electric dipole is 28 J. If its potential energy is +14 J, what can be the angle between the dipole moment and the electric field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe product pE for an electric dipole is 20 J. If its potential energy is −10 J, what can be the angle between the dipole moment and the electric field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsAt which angle is the torque on an electric dipole equal to √3/2 of its maximum value while its potential energy is negative?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsAt which angle is the torque on an electric dipole equal to √3/2 of its maximum value while its potential energy is positive?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsAt which angle is the torque on an electric dipole equal to half its maximum value while its potential energy is negative?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsAt which angle is the torque half of its maximum value while the potential energy of the dipole is positive?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe angle between the dipole moment and the electric field is 45°. What is the ratio of the torque magnitude to the magnitude of the potential energy?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf the torque on a dipole is √2/2 times its maximum torque and its potential energy is positive, what is the angle between the dipole moment and the electric field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf the torque on a dipole is √2/2 times its maximum torque and its potential energy is negative, what is the angle between the dipole moment and the electric field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsWhat external work is needed to slowly move a dipole from stable equilibrium to unstable equilibrium if the product of its dipole moment and the electric field is 31 J?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard