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ক- ইউনিট [গাণিতিক ও পদার্থ বিষয়ক অনুষদ] || জাহাঙ্গীরনগর বিশ্ববিদ্যালয় || 2009

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Wave is a form of distribance which travels through a medium and is produced due to periodic motion of particles about their means positions. During wave motion, the molecules taransfer the energy form one molecule to another. Shortest distanced between any two particles which are in same phase is called wavelength.