W.B cl-9 physics/ শব্দ/sound
3 videos • 476 views • by Vivek Math & Science
1
Sound/ শব্দ / Physical Science / ভৌত বিজ্ঞান /class-9/Part-1/by Vivek (M.Sc)/in Bengali
Vivek Math & Science
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2
Full Details of Wave/তরঙ্গ/Sound/Physical Science /class-9/Part-2/by Vivek (M.Sc)/in Bengali
Vivek Math & Science
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3
Amplitude,wavelengths,period,frequency & velocity of Wave/তরঙ্গ/ভৌত বিজ্ঞান/class-9/Part-3/by vivek
Vivek Math & Science
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