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In SONAR, we use :...

In SONAR, we use :

A

ultrasonic waves

B

infrasonic waves

C

radio waves

D

audible sound waves

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Verified by Experts

The correct Answer is:
A
SONAR is a device that uses ultrasonic waves to measure the distance , direction , direction and speed of under water objects.
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NCERT EXEMPLAR-SOUND-Sound
  1. Note is a sound :

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  2. A key of a mechanical piano is struck gently and then struck again but...

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  3. In SONAR, we use :

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  4. Sound travels in air if :

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  5. When we change feeble sound to loud we increase its :

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  6. In the curve, half the wavelength is : .

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  7. Earthquake produces which kind of sound before the main shock wave beg...

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  8. Infrasound can be heard by :

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  9. Before playing the orchestra in a musical concert, a sitarist tries to...

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  10. the displacement versus time relation for a disturbance travelling wit...

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  11. Which of the above two graphs : (a) and (b)the human voice is likely t...

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  12. A girl is sitting in the middle of a park of dimension 12 m xx 12 m. O...

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  13. why do we hear the sound produced by the humming bees while the sound ...

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  14. If any explosion takes place at the bottom of a lake, what type of sho...

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  15. Sound produced by a thunderstorm is heard 10 s after the lighting is s...

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  16. For hearing the loudest ticking sound heard by the ear, find the angle...

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  17. Why is the ceiling and wall behind the stage of good conference halls ...

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  18. Represent graphically by two separate diagrams in each case : (i) Tw...

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  19. Establish the relationship between speed of sound, its wavelength and ...

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  20. Draw a curve showing density or pressure variations with respect to di...

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