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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Oscillations
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Two waves of amplitudes 3 mts and 9 mts interfere . The resulting amplitude cannot be

$(a)\;6\;mts\qquad(b)\;12\;mts\qquad(c)\;8\;mts\qquad(d)\;5\;mts$

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A)
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Answer : (d) $\;5\;mts$
Explanation :
maximum Amplitude =$\;A_{1}+A_{2}=12$
minimum Amplitude =$\;A_{1}-A_{2}=6\;mts$
and [6,12] is the range of amplitudes .
Therefore , cannot be amplitude .
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