5:09Echo | Definition | Minimum Distance Required for Echo | Sound Class 9 Physics | Gagan SirDikki Institute745 viewsView & Download
1:51The minimum distance to hear an echo is (Taking the velocity of sound in air to be 330 m s^-1 ) ...PW Solutions653 viewsView & Download
2:32At 20^∘C, the minimum distance of a person from a sound reflecting surface to hear an echo is : (...PW Solutions162 viewsView & Download
1:35To hear an echo, the minimum distance between source and reflector in air is: | 7 | SOUND | PHYS...Doubtnut219 viewsView & Download
2:12How can I use the sound of an echo to determine distance?| Sample Paper| @digitalgeneration7049Digital Generation18 viewsView & Download
2:20What is the minimum distance required to hear an echo? (Take speed of sound in air = 340 m/s)MyNotesg3 viewsView & Download
1:59For hearing an echo, the minimum distance between the source of sound and the reflecting body sh....PW Solutions502 viewsView & Download
6:36Minimum distance for echo (Hindi) | Physics | Khan AcademyKhan Academy India48.3K viewsView & Download
1:15SOUND Exercise 7A Q3 Selina What should be the minimum distance between the source and refl2 IITians318 viewsView & Download
4:40At 20^∘C, what should be minimum distance of a person from a sound reflecting surface to hear an ...PW Solutions372 viewsView & Download
41:43Class 9 Physics NCERT Chap 11 | Sound 08 | What is Echo | What is Minimum Distance to Hear an Echo ?cbse class 967 viewsView & Download
