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Question
বায়ু ও পানিতে 300Hz কম্পাসের একটি শব্দ তরঙ্গ দৈর্ঘের পার্থক্য 4 .১৬ম । বায়ুতে শব্দের বেগ 352
m
s
-
1
হলে পানিতে শব্দের বেগ কত?
1290
m
s
-
1
1350
m
s
-
1
1599
m
s
-
1
1689
m
s
-
1
ANSWER : 3
Descrption
<p style="margin-left:0px;"><strong>1599 ms<sup>-1</sup></strong></p><p style="margin-left:0px;">শব্দের তরঙ্গদৈর্ঘ্য = বেগ / কম্পাঙ্ক</p><p style="margin-left:0px;">বায়ুতে:</p><p>λ a = v a / f </p><p>λ a = 352 m / s / 300 Hz </p><p>λ a = 1.17 m </p><p style="margin-left:0px;">পানিতে:</p><p>λ w = v w / f </p><p>λ w - λ a = v w / f - 352 m / s / 300 Hz </p><p>4.16 m = v w / 300 Hz - 352 m / s / 300 Hz </p><p>v w = 4.16 m + 352 m / s / 300 Hz </p><p>v w = 1599 m / s </p><p style="margin-left:0px;">সুতরাং, পানিতে শব্দের বেগ <strong>1599 ms<sup>-1</sup></strong></p>
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