WHAT ARE ULTRASOUNDS ?

WHAT IS LEFT AND WHAT IS RIGHT?

Ultrasonic signal sent from SONAR returns to it after reflection from a rock after a lapse of 1 sec. If the velocity of ultrasound in water is 1600 ms^(-1) , the depth of the rock in water is

What is ultrasound ? Describe some of its practical applications ?

The speed of sound in human tissue is of the order of 1500 m//s . A 3.5 MHz probe is used for an ultrasonic procedure. (a) If the effective physical depth of the ultrasound is 250 wavelengths, what is the physical depth in metres ? (b) What is the time lapse for the ultrasound to make a round trip if reflected from an object at the effective depth ? (c ) The smallest detail capable of being detected is of the order of one wavelength of the ultrasound. What would this be ?

Which of the following animals can produce ultrasound ? A) Moths B) Porpoises C) Shark D) Elephant

Revision|General Characteristics Of Waves|Reflection Of Sound|Echo|Reverberation|Uses Of Reflection|Range Of Hearing|Application Of Ultrasound|OMR

Some devices and electromagnetic wave are given in column -1 and column-2, match the device with electromagnetic wave work [[Column-1,Column-2],["(A) Mobile" ,"(P) Microwave"],["(B) Sonar" ,"(Q) IR"],["(C) Radar" ,"(R) Radiowave" ],["(D) Optical Fiber" ,"(S) Ultrasound"]]