Browsing: Physics

Prev 1 2 3 4 5 Next mock test 41. Sounds of frequencies less than 20Hz is _____ waves. A.…

Prev 1 2 3 4 5 Next mock test 31. Which part of the ear is called ‘pinna’? A. Middle…

Prev 1 2 3 4 5 Next mock test 21. A radio station broadcast at 30 metre band. The frequency…

Prev 1 2 3 4 5 Next mock test 11. As per the WHO, the safe noise level for a…

Prev 1 2 3 4 5 Next mock test 1. In which medium the speed of sound is maximum? A.…