Physics · General Awareness

Physics Measuring Instruments

1,123 Questions

Physics measuring instruments are essential tools used to measure various physical quantities. This topic covers devices like hygrometers, oscilloscopes, and sphygmomanometers. It is a highly scoring section in general science and general awareness examinations.

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Physics Measuring Instruments Questions

Multiple choice physics measurements and units measuring mass measurement of mass measuring instruments

Name a common device, among the following, used to measure mass of a body.

  1. Physical balance

  2. Spring balance

  3. Barometer

  4. Speedometer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Physical balance is used to measure the mass of the body. Spring balance measures the weight of the body, barometer measures the pressure exerted by the gas and speedometer measures the speed of the vehicle.

Multiple choice physics measurements and units measuring mass measurement of mass measuring instruments

Burette and Pipette are used to measure mass

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Burette and pipette are the volumetric glassware that are used to measure the volume of liquids (or solutions) mostly in chemistry laboratory. On the other hand mass is the amount of matter in an object which most commonly measured using balance.
Hence, given statement is false.
Multiple choice physics measurements and units measuring mass measurement of mass measuring instruments

We can measure weights using both spring and beam balance. But on moon, which one will give accurate measuring ?

  1. Beam Balance

  2. Spring Balance

  3. Both

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Spring balance is used to measure the weight of the body whereas beam balance is used to measure the mass of the body. Since the mass of the body remains the same on earth as well as on moon but the acceleration due to gravity differs. So, the beam balance gives the same value of mass of body on earth and moon but spring balance gives different values of weight. So we can measure the mass of body on moon by beam balance and then multiply it by $g = 9.8 \ m/s^2$ to get the weight which would be more accurate.

Multiple choice

What is the variable in an experiment?

  1. the glass tubes you use

  2. the thing you want to test

  3. the questions you ask

  4. the part that stays the same
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In an experiment, the variable is the specific factor or condition that is changed or manipulated to see how it affects the result. It is the 'thing' being tested.

Multiple choice chemistry composition of matter heterogeneous mixture - suspension and its properties suspension types of mixture

Apparatus used to sediment particles in supension is : 

  1. centrifuge

  2. barometer

  3. balance

  4. calorimeter

  5. battery
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Apparatus used to sediment particles in supension is centrifuge.
Calorimeter is used to measure the heat absorbed or released by a reaction.
Barometer is used to measure pressure.
Balance is used to measure weight of a substance.
Battery is used to provide electricity.

Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

The instrument by which blood pressure of a man can be determined is

  1. Ultrasound

  2. Blood pressure meter

  3. Stethoscope

  4. Sphygmomanometer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A sphygmomanometer is an instrument, often attached to an inflatable air bladder cuff and used with a stethoscope, for measuring blood pressure in an artery.
So, the correct answer is option D.
Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

Sphygmomanometer measures

  1. Blood pressure

  2. Pulse rate

  3. Rate of heart beat

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood pressure is the pressure exerted by the flowing blood on the elastic walls of arteries. Blood pressure is measured in two stages- systolic and diastolic. The instrument by which we can measure blood pressure is called sphygmomanometer. In humans, the blood pressure is measured in the brachial artery.

So, the correct answer is option A.

Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

The instrument by which B.P. of man is determined is 

  1. Sphygmomanometer

  2. Cardiograph

  3. Ultrasound

  4. Stethoscope
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood pressure is regulated by the amount of water and salts. It is regulated by hormones secreted by the adrenal gland. Aldosterone regulates a number of salts and water in the blood. The fluctuation in the blood pressure is measured by Sphygmomanometer. It was invented by Samuel Siegfried Karl Ritter von Basch in 1881. Hence, the correct answer is option A.

Multiple choice biology human body and organ system blood pressure circulatory system transportation in animal and plants

The instrument by which blood pressure of a man is determined

  1. Sphygmomanometer

  2. S.P. meter

  3. Ultrasound

  4. Stethoscope
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A sphygmomanometer is an instrument attached to an inflatable air bladder cuff and used with a stethoscope, for measuring blood pressure in an artery. It is estimated with reference to mmHg.

So, the correct answer is option A.