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Question

A projectile, when projected with same speed either at an angle θ or 2θ with the horizontal, has the same range R. Then the value of θ is

जब एक प्रक्षेप्य को क्षैतिज के साथ या तो कोण θ या 2θ पर समान चाल से प्रक्षेपित किया जाता है, तब इसकी समान परास R है। तब θ का मान है

A
30°
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B
53°
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C
45°
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D
15°
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