What is the speed of sound in air?

Correct option is A

The correct answer is (a) 343 m/sec

Explanation:
The speed of sound in air at 20°C (68°F) is approximately 343 meters per second (m/s). This speed can vary depending on factors such as temperature, humidity, and air pressure. For example, the speed of sound increases with an increase in temperature.

Information Booster:

The speed of sound in air is calculated using the formula:

v=331 m/s+(0.6×T)

where v is the speed of sound and T is the temperature in Celsius.

• At 0°C, the speed of sound is about 331 m/s, and it increases by 0.6 m/s for every 1°C rise in temperature.
• Sound travels faster in denser mediums like water (approximately 1481 m/s) and even faster in solids like steel (approximately 5960 m/s).