The maximum speed of vibrations which produce audible sound will be in:

Which of the following are used to study the growth of fetus inside the mother's womb?

We can distinguish between the musical sounds produced by different singers on the basis of the characteristic of sound called:

The sound waves travel fastest:

The speeds of sound in four different media are given below. Which of the following is the most likely speed in m/s with which the two under water whales in a sea talk to each other when separated by a large distance ?