\(27\) समरूप बूँदे प्रत्येक \(22\,V\) पर आवेशित है। सब मिलकर एक बड़ी बूँद का निर्माण करती है। बड़ी बूँद का विभव \(V\) का मान ज्ञात कीजिए।

A \(200\)
B \(198\)
C \(87\)
D \(177\)

Verified Solution

Answer & Solution

Correct Answer

(B) \(198\)

Step-by-step Solution

Detailed explanation

\(q \rightarrow nq\) \(n \frac{4}{3} \pi r ^{3}=\frac{4}{3} \pi\left( r ^{\prime}\right)^{3}\) \(\Rightarrow r ^{\prime}= n ^{\frac{1}{3} r }\)…

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.

Same subject

सूची - I का सूची - II से मिलान करें।

सूची-I	सूची-II
(A) कोणीय आवेग	(I) \(\left[M^0 L^2 T^{-2}\right]\)
(B) गुप्त ऊष्मा	(II) \(\left[M L^2 T^{-3} A^{-1}\right]\)
(C) वैद्युत प्रतिरोधकता	(III) \(\left[M L^2 T^{-1}\right]\)
(D) विद्युत वाहक बल	(IV) \(\left[M L^3 T^{-3} A^{-2}\right]\)

JEE Mains 2025 Easy

Explore more questions on app

From JEE Mains

Explore more questions on app