MHT CET 2026 Physics question
A string of length 0.5 m and mass 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 . What is the minimum value of which allows constructive interference between successive pulses?
Answer: (D)
Solution
The linear mass density is kg/m, so the wave speed is m/s. A pulse is inverted (phase change of ) at each reflection from a clamped end, so after reflecting at both
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