Verified Solution • 2025–26 Session moderate

QAIPMT-2010-Ph-1968: NEET 2010 Physics - Class 12 AIPMT-2010-Ph-1968 Solution: Two parallel metal plates having charges +Q and -Q face each…

Two parallel metal plates having charges +Q and -Q face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank the electric field between the plates will become zero increase decrease remain same

Multiple Choice Options

  • A 3 ×\times _ 10 −- _ 3 N m
  • B 1.5 ×\times _ 10 −- _ 3 N m
  • C 1.5 ×\times _ 10 −- _ 2 N m
  • D 3 ×\times _ 10 −- _ 2 N m

Step-by-Step Verified Solution

Magnetic moment of the loop. M = NIA = 2000 _ 2 _ 1.5 _ 10 �4 = 0.6 J/T Torque _ = MBsin30� = 0.6 _ 5 _ 10 _ 2 _ 1 2 = 1.5 _ 10 _ 2 N m

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