Measuring Devices And Scales

1. In SONAR, we use

A . Radio waves

B . Audible sound waves

C . Ultrasonic waves

D . Infrasonic waves

2. The apparatus used to measure intensity of sound is

A . Chronometer

B . Anemeter

C . Audiophone

D . Audiometer

3. Which one of the following instrument is used for locating submerged objects in an ocean?

A . Audiometer

B . Galvanometer

C . Sextant

D . SONAR

4. SONAR is mostly used by

A . Astronauts

B . Doctors

C . Engineers

D . Navigators

5. Which of the following is measured by ' Anemometer'?

A . Velocity of water-flow

B . Depth of water

C . Force of the wind

D . Intensity of light

6. The velocity of wind is measured by

A . Barometer

B . Anemometer

C . Hydrometer

D . Wind Vane

7. Pyrometer is used to measure

A . Air pressure

B . Humidity

C . High temperature

D . Density

8. Which one of the following devices is used to measure extremely high temperature?

A . pyrometer

B . Photometer

C . Phonometer

D . Pycnometer

9. Which one of the following thermometers is known as pyrometer?

A . Thermo-electric thermometers

B . Radiation theremometers

C . Gas thermometers

D . Liquid thermometers

10. Pyrheliometer' is used for measuring

A . Sun spots

B . Solar radiation

C . Air temperature

D . Temperature of plants

Measuring Devices And Scales

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