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एक प्रगामी आवर्ती तरंग को समीकरण y(x, y)...

एक प्रगामी आवर्ती तरंग को समीकरण y(x, y) = `10^(-3)` sin(50t + 2x) से निरूपित किया जाता है, जहाँ x तथा y मीटर में तथा 1 सेकण्ड में हैं। निम्न में से तरंग के लिए कौनसा कथन सत्य है|

A

the wave is propagating along the negative x-axis with sped `25ms^(-1)`

B

the wave is propagating along the postitive x-axis with speed `100ms^(-1)`

C

the wave is propagating along the postive x-axis with speed `25ms^(-1)`

D

the wave is propagating along the nagative x-axis with speed `100ms^(-1)`

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