16:I[8216,["972","static/chunks/972-b28da0de92681928.js","47","static/chunks/47-a7f06e9eda1ac756.js","115","static/chunks/app/%5Bexam%5D/questions/%5Byear%5D/%5Bsubject%5D/%5Bchapter%5D/%5BquestionId%5D/page-7b6f0a12b9cc0206.js"],"BackButton"] 17:I[1553,["972","static/chunks/972-b28da0de92681928.js","47","static/chunks/47-a7f06e9eda1ac756.js","115","static/chunks/app/%5Bexam%5D/questions/%5Byear%5D/%5Bsubject%5D/%5Bchapter%5D/%5BquestionId%5D/page-7b6f0a12b9cc0206.js"],"QuestionViewer"] 15:T53a,{"@context":"https://schema.org","@type":"Quiz","name":"Mht Cet 2026 Waves PYQ with Solution","url":"https://pyq-test-series-platform-alsjdcxu2-sameers-projects-41c5a71e.vercel.app/mht-cet/questions/2026/physics/waves/jt-mr4oxpel","educationalLevel":"Entrance exam preparation","about":"Mht Cet / Physics / Waves","hasPart":{"@type":"Question","name":"Mht Cet 2026 Waves PYQ with Solution","text":"A string of length 0.5 m and mass 10^{-3} kg is tightly clamped at its ends. The tension in the string is 0.8 N. Identical wave pulses are produced at one end at equal intervals of time \\Delta t. What is the minimum value of \\Delta t which allows constructive interference between successive pulses?","eduQuestionType":"mcq","acceptedAnswer":{"@type":"Answer","text":"D"},"comment":{"@type":"Comment","text":"The linear mass density of the string is \\mu=\\frac{m}{L} Given, m=10^{-3}\\ \\text{kg}, \\quad L=0.5\\ \\text{m} So, \\mu=\\frac{10^{-3}}{0.5}=2\\times 10^{-3}\\ \\text{kg m}^{-1} The speed of a wave pulse on a stretched string is v=\\sqrt{\\frac{T}{\\mu}} Here, T=0.8\\ \\text{N} So, v=\\sqrt{\\frac{0.8}{2\\times 10^{-3}}} v=\\sqrt{400}=20\\ \\text{m s}^{-1} For constructive interference between successive identical pulses, the first pulse should return to the starting end with the same phase. At a fixed end, a pul..."}}}18:T471,

The linear mass density of the string is

$$ \mu=\frac{m}{L} $$

Given,

$$ m=10^{-3}\ \text{kg}, \quad L=0.5\ \text{m} $$

So,

$$ \mu=\frac{10^{-3}}{0.5}=2\times 10^{-

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