1.In SONAR, we use
2.The apparatus used to measure intensity of sound is
3.Which one of the following instrument is used for locating submerged objects in an ocean?
4.SONAR is mostly used by
5.Which of the following is measured by ' Anemometer'?
6.The velocity of wind is measured by
7.Pyrometer is used to measure
8.Which one of the following devices is used to measure extremely high temperature?
9.Which one of the following thermometers is known as pyrometer?
10.Pyrheliometer' is used for measuring
11.What is measured by manometer?
12.Which instrument is used to measure atmospheric pressure?
13.The density of milk can be obtained by the use of
14.Which instrument is used for measuring humidity in the air?
15.The name of the equipment used for measuring blood pressure is
16.The apparatus used to measure the intensity of light is known as
17.Rader us used for
18.Which of the following quantities is measured on the Richter scale?
19.The Intensity of Earthquake is measured in
20.Which of the following is a seismometer device?
21.Fathometer is used to measure
22.Which one of the following is not correctly matched?
23.Phonometer is used to measure which one of the following?
24.The apparatus used for detecting lie is known as