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JEE MAIN 2026 Crash Course
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जब एक व्यक्ति अपनी चाल 2 मी /से बढ़ाता है , तब उसकी गतिज ऊर्जा दो गुनी हो जाती है , व्यक्ति की वास्तविक चाल है
A. `2(sqrt2 - 1)`मी /से
B. `2 (sqrt2+1)` मी /से
C. `4.5` मी /से
D. इनमे से कोई नहीं

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