Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
why in dark room we hear sound but light can,t reach there?
2 Answers
- CodyLv 61 decade agoFavorite Answer
In a dark room, light from outside the room can not penetrate the walls and doors, but sound is able to penetrate these materials and thus you can hear sounds from outside the room. We can make sound-proof rooms, too, of course.
- 1 decade ago
sound is a physical wave while light is 'not'. sounds travel by moving particles and therefore can penetrate walls. while light is turned back by these same walls