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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।

PhysicsWhat external work is needed to move a dipole slowly from stable equilibrium to unstable equilibrium if pE = 37 J?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 12Hard PhysicsA dipole is allowed to move freely from unstable equilibrium to stable equilibrium. If pE = 42 J, what work is done by the electric field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 12Hard PhysicsA dipole is allowed to rotate freely from 90° to 0°. What work is done by the electric field if the product of the dipole moment and field is 48 J?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 12Hard PhysicsWhat external work is required to rotate a dipole slowly from the parallel position to 120° if the product of its dipole moment and the field is 30 J?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 12Hard PhysicsWhat external work is required to rotate a dipole slowly from the parallel position to 60° if the product of its dipole moment and the field is 54 J?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 12Hard PhysicsThe product of the dipole moment and the external electric field is 36 J. What is the potential energy of the dipole when the angle between them is 150°?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 12Hard PhysicsThe dipole moment is directed from negative to positive. If the electric field is directed from positive to negative, what angle is between them?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe angle between the dipole moment and the electric field has sine zero and cosine equal to one. Which position is this?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe angle between the dipole moment and the electric field has sine zero and cosine equal to negative one. Which position is this?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe angle between the dipole moment and the electric field has positive sine and zero cosine. Which conclusion is correct?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf a dipole is parallel to the electric field, why does a small angular displacement tend to bring it back?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf the dipole moment and electric field are opposite, why is the equilibrium position unstable even though the torque is zero?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsWhy does the vector form of torque show that torque is zero when the dipole moment is parallel to the field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsWhich rule helps determine the direction of torque on a dipole in a uniform electric field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsWhy can the net force on a dipole be nonzero in a nonuniform electric field?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsAn electric dipole is released freely in a uniform field with an initial angle of 135°. Toward which position will it tend to rotate?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe potential energy of an electric dipole is zero. If it is rotated slightly toward the opposite direction, what happens to its energy?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsThe potential energy of an electric dipole is zero. If it is rotated slightly toward the parallel direction, what happens to its energy?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsIf the dipole moment direction is mistakenly taken from the positive charge to the negative charge, why can the conclusion about potential energy be wrong?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard PhysicsAn electric dipole in a uniform field has zero net force but rotates. Which physical idea best explains this behavior?Class 12Electric Charges and FieldsDipole in a Uniform External FieldLevel 11Hard