A splash is heard 3.91 after a stone is dropped into a well of 67.6 m deep. The speed of sound in air is

A splash is heard 3.91 after a stone is dropped into a well of 67.6 m

1.	A splash is heard 3.91 after a stone is dropped into a well of 67.6 m deep. The speed of sound in air is
Answer» `346m//s` `320m//s` `330m//s` `338m//s` ANSWER :D