a sound has 13 crests and 15 troughs in 3 seconds. when the second crest is produced the first is 2 cm away from the source?calculate(a)the wavelength(b)the frequency(c)the wave speed
Answers
Answered by
3
a) Wavelength = 2cm [distance between two consecutive crests or trough]
b) Frequency = No. of troughs / Time
= 15/3
= 5 Hz
c) Wave speed = Distance / Time
→ Distance travelled = 15 × 2
= 30 cm
→ Time = 3 seconds
➪ Wave speed = 30 / 3 = 10 cm/s
Similar questions