Verified Solution • 2025–26 Session moderate

QAIPM-2012-Ph-1754: NEET 2012 Physics - Class 12 AIPM-2012-Ph-1754 Solution: The damping force on an oscillator is directly proportional to…

The damping force on an oscillator is directly proportional to the velocity. The units of the constant of proportionality are kg m s−1\text{kg m s}^{-1} kg m s−2\text{kg m s}^{-2} kg s−1\text{kg s}^{-1} kg s\text{kg s}

Multiple Choice Options

  • A Q = −- _ q
  • B Q = −1q- {1 \over q} _ q 1 _
  • C Q = q
  • D Q = 1q{1 \over q} q 1 _

Step-by-Step Verified Solution

Let the side length of square be 'a' then potential at centre O is V = k ( _ Q ) a 2 + k ( _ q ) a 2 + k ( 2 q ) a 2 + k ( 2 Q ) a 2 = 0 = � Q � q + 2q + 2Q = 0 = Q + q = 0 _ Q = � q

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