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पृथ्वी से निश्चित वेग से हवा में फेंके गए पिण्ड के लिए प्रक्षेपण कोण क्या हो जिससे ----
(a) पिण्ड अधिकतम ऊंचाई तक जाये
(b) पिण्ड का उड्डयन काल अधिकतम हो
( c) पिण्ड का क्षैतिज प्रास अधिकतम हो
(d) पिण्ड की क्षैतिज प्रास व् प्राप्त ऊंचाई बराबर हो ?

1 Answer

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Best answer
(a) `90^@`,
(b) `90^@`,
( c) `45^@`,
(d) `tan^-1`
(4) अथवा `76^@` ।

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