Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in oppositedirection with a speed of 20 mm/s. The distance in mm between adjacent nodes is :

Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travellin

1.	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 :
A.	1.0
B.	1.2
C.	1.5
D.	2.0
Answer» B. 1.2