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Question

A charge particle (qm = 1 in SI unit) is projected from origin with speed 5 m/s in a gravity free region having uniform magnetic field B=2^i T. Find minimum time after which it again touches the x-axis.

एक आवेश कण (SI मात्रक में qm = 1) को एकसमान चुम्बकीय क्षेत्र B=2^i T वाले किसी गुरूत्व मुक्त क्षेत्र में 5 m/s की चाल से मूल बिन्दु से प्रक्षेपित किया जाता है। यह कितने न्यूनतम समय के बाद x-अक्ष को पुनः स्पर्श करता है?

A
π2 s
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B
π s
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C
π4 s
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D
2π s
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Solution

The correct option is B π s
Solution

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