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Fa) Wavelength 5. A person rings a metallic bell near asconcrete wall. He hears the echo after0.3 s. If the sound moves with a speed340 m/s. The wall is far from him?(c) Frequency(a) 102 m(b) 11 m(c) 51 mes are similar to th(d) 3 |
| Answer» C ) 51 m ANSWER of this QUESTION | |