GK
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Generally, sound travels slower in a 20
|
|
False
|
|
|
True
|
|
|
Either A or B
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -The speed of sound in dry air at 20 °C is 343 m/s and the lowest frequency sound wave that the human ear can detect is approximately 20 Hz.
Detailed explanation-2: -For example, at zero degrees Celsius (32 degrees Fahrenheit), the speed of sound is calculated to be 1085.1 feet per second. At 20 degrees Celsius, we get 1124.1 feet per second.
Detailed explanation-3: -So, the speed of sound at 30 degrees c will be around 350 m/s.
Detailed explanation-4: -Hence, sound travels fastest in solids and slowest in gases.
There is 1 question to complete.