other govt exam BARC DAE Junior Purchase Assistant / Junior Storekeeper Mock Test General Science Physics Wave

25°C (77°F) এ পাতিত জলে শব্দের আনুমানিক গতি কত?

1

1284 মি/সেকেন্ড

2

1598 মি/সেকেন্ড

3

3980 m/s

4

1498 m/s

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