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Ranjeet • 14.18K Points
Tutor II Science
492

Q. बाल पेन किस सिद्धान्त पर काम करता है ?

(A) श्यानता
(B) बॉयल का नियम
(C) गुरुत्वीय बल
(D) पृष्ठीय तनाव
Correct Answer - Option (D)

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