Download App

Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound1 Mark
MCQ
What type of waves are generated by $SONAR$ device fixed to a fishing ship$?$
  • A
    Water waves.
  • B
    Radio waves.
  • ✓
    Sound waves.
  • D
    Infrared waves.
✓

Answer

Correct option: C.
Sound waves.

$SONAR$ uses ultrasonic sound waves.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 M]" from Sound→Sound — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

What is the process of curing infection called?
→
A quiet sound is produced by a loudspeaker. The loudness of the sound is increased.
Which property of the sound wave is increased?
→
A boy is pushing hard on a wall. Is he doing work?
→
Which of the following have been artificially selected?
→
Which of the following is seperation technique to seperate kerosene oil, water and salt:
→
Cardiac muscles are:
→
The latent heat of fusion of ice is:
→
A car is travelling at a speed of 90km/h. Brakes are applied so as to produce a uniform acceleration of – 0.5m/s2. Find how far the car will go before it is brought to rest?
→
Rutherford’s $\alpha –$particle scattering experiment showed that:
  1. Electrons have negative charge.
  2. The mass and positive charge of the atom is concentrated in the nucleus.
  3. Neutron exists in the nucleus.
  4. Most of the space in atom is empty.
Which of the above statements are correct?
→
The ultrasound waves can penetrate into matter to a large extent because they have:
→