Q: 29 (CDS-I/2004)

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Two waves, each of amplitude
1.5 mm and frequency 10 Hz, are travelling in opposite direction with a speed of 20 mm/s. The distance in mm between-adjacent nodes is
question_subject: 
Science
question_year: 
2004
question_exam: 
CDS-I
stats: 
0,96,88,32,96,32,24