A train while whistling moves with a speed thrice the speed of sound away from a stationary listner. Then frequency of sound waves heard by the listner will become? 3 times One-third 4 times One-fourth Right Answer: One-fourth Share : December 16, 2017 Asghar Khan Physics Total 0 Votes: 0 0 Tell us how can we improve this Mcqs? Captcha: + = Verify Human or Spambot ? Related Mcqs Check Below -The unit of resistivity is?Hotness or coldness of an object is represented in term of?Image of an object 5 mm high is only 1 cm high. Magnification produced by lens is?