Match List-I with List-II
| List-I | List-II | ||
|---|---|---|---|
| Device | Uses / Function | ||
| (A) | Microphone | (I) | Converts sound waves to electrical vibrations |
| (B) | Audiometer | (II) | Measure intensity of sound |
| (C) | Odometer | (III) | For measuring the force and velocity of wind |
| (D) | Anemometer | (IV) | Used in vehicles to measure distance |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
The names give a clue: ‘audio’ is about sound, ‘odo’ comes from the Greek word for a way or road, and ‘anemo’ from the Greek word for wind.
(A) Microphone — this matches (I) Converts sound waves to electrical vibrations. It turns sound waves into electrical signals that can be amplified, recorded or sent far away.
(B) Audiometer — this matches (II) Measure intensity of sound. It produces sounds of known intensity (in decibels) and pitch, and is used to test how well a person hears.
(C) Odometer — this matches (IV) Used in vehicles to measure distance. It counts the turns of the wheels and shows the distance travelled by the vehicle.
(D) Anemometer — this matches (III) For measuring the force and velocity of wind. The common type has cups that spin in the wind; the faster they spin, the stronger the wind.