Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
In which of these medium can sound travel?
1.Wood
2.Water
3.Air
4.Vacuum
1 and 2
1, 2, and 3
2 and 4
2, 3, and 4.
Vibration in a body produce
Sound
Pressure
Density
Current
Sound is slowest in
Air
Water
Solid
vacuum
Which of the following statements are correct
1.Sound is produced by vibration
2.Sound requires a medium for propagation
3.Light and sound both require a medium for propagation
4.Sound Travels slower than light
2, 3, and 4
1, 2, and 4
The normal range of vocals cords in women is
20 mm
10 mm
15 mm
40 mm
