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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।

PhysicsWhich statement is correct when comparing the electric field at the centre of a complete ring and a half ring?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsTwo distributions have the same total charge: one is a ring and the other is a straight rod. Why can their electric fields be different?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsIn a non-uniform linear charge distribution, the local density is zero at one location but nonzero elsewhere. What can be said about the total charge?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsIf the observation point is very near a long charged wire, why does the point-charge approximation become weak?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsWhen a point on the perpendicular bisector of a uniformly charged straight rod is taken very far from the rod, what can the rod be approximated as?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsAt a point on the axis of a uniformly charged ring, away from its centre, transverse field components cancel. Which component remains?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsIf only the upper half of a uniformly charged ring is retained, why is the electric field at the centre not zero as it is for a complete ring?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsThe electric field at the centre of a uniformly charged ring is zero. If the ring's total charge is doubled while the distribution remains uniform, what is the electric field at the centre?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsA solid with uniform volume charge density is divided into three parts of unequal volumes. Which part has the greater volume charge density?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Easy PhysicsA uniformly surface-charged plate is divided into two parts with unequal areas. Which part has the greater surface charge density?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Easy PhysicsA wire with uniform linear charge density is cut into two parts of unequal lengths. Which part has the greater linear charge density?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Easy PhysicsIn a uniform volume distribution, a part has a volume equal to seven-tenths of the total volume. What fraction of the total charge is contained in that part?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Easy PhysicsIn a uniform surface distribution, a part has area equal to three-eighths of the total area. What fraction of the total charge is on that part?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Easy PhysicsIn a uniform linear distribution, a part has length equal to two-fifths of the total length. What fraction of the total charge is on that part?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Easy PhysicsTwo surfaces have the same total charge. The area of the first surface is four times that of the second. Assuming uniform distribution, how does the surface density of the first compare with that of the second?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsIn two uniformly charged wires, the first has three times the linear density of the second and half its length. How does the total charge of the first wire compare with that of the second?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsIn a uniform volume distribution, volume density is 6 C/m³ and volume is 10 m³. If density becomes half and volume becomes three times, what is the total charge?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsIn a uniform surface distribution, total charge is 84 C and area is 12 m². If total charge doubles and area becomes seven times, what is the new surface density?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsIn a uniform linear charge distribution, total charge is 90 C and length is 15 m. If total charge becomes one third and length becomes one fifth, what is the new linear density?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 6Medium PhysicsWhen is integration mainly needed in a continuous charge distribution?Class 12Electric Charges and FieldsContinuous Charge DistributionLevel 5Medium