एक चुम्बकीय क्षेत्र में रखे हुए चुम्बकीय द्विध्रुव की

A स्थितिज ऊर्जा अधिकतम होगी यदि बल आघूर्ण अधिकतम है।
B स्थितिज ऊर्जा शून्य होगी यदि बल आघूर्ण न्यूनतम है।
C स्थितिज ऊर्जा शून्य होगी यदि बल आघूर्ण अधिकतम है।
D स्थितिज ऊर्जा न्यूनतम होगी यदि बल आघूर्ण अधिकतम है।

Verified Solution

Answer & Solution

Correct Answer

(C) स्थितिज ऊर्जा शून्य होगी यदि बल आघूर्ण अधिकतम है।

Step-by-step Solution

Detailed explanation

Potential energy of dipole, \(U = - pE\,\cos \,\theta \) Torque experienced by dipole \(\tau = pE\,\sin \,\theta \) Torque will be maximum \(({\tau _{\max }})\) when \(\theta = {90^o}\) then potential energy \(U = 0\)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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