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

A. dry air B. sea water

C. ground glass D. human blood

Sound travels in air :

A. if particles of medium travel from one place to another

B. if there is no moisture in the atmosphere

C. if disturbance moves

D. if both, particles as well as disturbance move from one place to another

In the sound wave produced by a vibrating turning fork shown in the diagram, half the wavelength is represented by: (picture)

A. AB B. BD

C. DE D. AE

The sound waves travel fastest:

A. in solids B. in liquids

C. in gases D. in vacuum

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?

A. 340 B. 5170

C. 1280 D. 1530