Four students ABCD ina group take 6m long slinky and produce a longitudinal wave they observe that in 10 sec 4 waves are completed. on these observations the speed of wave in slinky is?
A:4.8m/s
B:6.4m/s
C:7.2m/s
D:9.6m/s
Answers
Answered by
3
so T= 2.5 so f= 0.4 also lamba = 2.5*6= 15 so v= 15*0.4 approx to option c
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0
Ans. (a) 4.8 m/s
Explanation:
Total distance covered by wave in slinky to cover 4 forth and backward motion
S = 4 × 2 × 6 = 48 m
Total time taken (t) = 10 s
Speed = Distance / Time
=48/10
= 4.8 ms
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