JEE MAIN - Physics Bengali (2022 - 28th July Morning Shift - No. 8)

$$\mathrm{y = 0.5\sin {{2\pi } \over \lambda }(400\,t - x)\,m}$$

এই তরঙ্গ-সমীকরণে তরঙ্গ গতির মান হবে ঃ

$$200$$ m/s
$$200\sqrt 2 $$ m/s
$$400$$ m/s
$$400\sqrt 2 $$ m/s

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