Doppler Effect
Hasan asks: “What is Doppler Effect?” Answer: Doppler Effect is the apparent change in frequency of a wave due to the relative motion between the source and the listener. (Please come back soon for...
View Articlewhy sound travel faster in moist air than in dry air?
Raza Asks: “Why sound travel faster in moist air than in dry air?” Answer: The density of dry air is more than that of moist air (Wonder why? Just answer me – which is denser – skimmed milk or fresh...
View ArticleClik here to view.
Factors affecting frequency of sound produced by a stretched string
Smile asks: Study how the frequency of sound produced will change in each case with the following strings of length 15cms when the strings are tied between 2 ends- aluminium string copper string...
View ArticleClik here to view.
Super Hero crossing Mach1 speed and then?!!
Charles posted this interesting Question on a Super Hero crossing the Mach 1 Speed. Visitors are requested to respond with your ideas. “I’m working on a novel with a “superhero” protagonist. The guy...
View ArticleClik here to view.
A fill up exercise for class 9 Physics from the chapter “Sound”
Dear students, Find below some of the fill in the blanks questions from the chapter sound. (Class 9 Science) Practisinf fill in the blanks typwe questions helps better comprehension and thorough...
View Article