General Science Measurement MCQ 1-25

Atomic Radius is measured in Nanometres (10-19m). Atomic Radius is defined as the Shortest distance Nucleus to its Outermost Orbit.

The helioscope is an instrument that is used to see the Sun and Sun’s surface area etc.

Pyrometer is an instrument used to measure high temperature, such as are encountered in furnances. When the temperature of an object is very high its temperature cannot be measured with a normal thermometer.

(i) Polygraph:– used as lie detector apparatus/machine
(ii) Seismograph – used to measure seismic waves.
(iii) Barograph – used to measure change in atmospheric pressure.
(iv) Polarimeter – used to measure the angle of rotation caused by passing polarized light.

Sphygmomanometer is used by the physician to measure blood pressure. Stethoscope is used to measure heart rate ……. of human body. Spiro meter is used to measure air inspired and expired. ECG or Electrocardiogram is used to measure electrical signal from the heart.

The doctor feels your heartbeats with the help of an instrument called a stethoscope. A doctor uses the stethoscope as a device to amplify the sound of the Heart. It consist of a chest piece that carries a sensitive diaphragm, two ear pieces and a tube joining the parts.

A cyclotron is a type of compact particle accelerator which produces radioactive isotopes that can be used for imaging procedure. Rests are correctly matched.

(i) Polygraph:– used as lie detector apparatus/machine
(ii) Seismograph – used to measure seismic waves.
(iii) Barograph – used to measure change in atmospheric pressure.
(iv) Polarimeter – used to measure the angle of rotation caused by passing polarized light.

A hygrometer is an instrument used to measure the amount of water vapour or humidity in atmosphere.

The electroscope is an early scientific instrument used to detect the presence of electric charge on a body. It detects charge by the movement of a test object due to the Coulomb electrostatic force on it. An electroscope can only give a rough indication of the quantity of charge. An instrument that measures electric charge quantitatively is called an electrometer.

Barometer is a device used to measure atmospheric pressure.
• A barometer can also be used to measure altitude. There are two main types of barometers: mercury and aneroid.

• A lactometer is used to find out the amount of water in the milk.

• A thermometer is an instrument that measures temperature.

• Multimeter is a testing tool used to measure two or more electrical values.

Potentiometer is a measuring instrument used for measuring an electromotive force by balancing it against the potential difference produced by passing a known current through a known variable resistance. Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment.

The strength of winds is measured with the help of Beaufort scale which starts with Zero (0) and goes to a force of 12. It was developed by British Admiral Sir Francis Beaufort in 1805 to help sailors.

The loudness of sound is measured in units called decibels (dB). A decibel unit expresses the relative intensity of sounds on a scale from zero for the average least perceptible sound to about 100 dB, which is near the level most people find uncomfortably loud.

Korotkoff sounds are usually observed when one measures blood pressure.

A kilowatt, is a globally recognized standard for measuring electricity. One kilowatt is equal to 1,000 watt or 1 KW = 1000 Joule per second.  Companies charge an electric bill by how much electricity we use per kilowatt hour (kWh).

The loudness of sound is measured in units called decibels (dB). A decibel unit expresses the relative intensity of sounds on a scale from zero for the average least perceptible sound to about 100 dB, which is near the level most people find uncomfortably loud.

An ammeter is a measuring instrument used to measure the current in a circuit. Electric currents are measured in amperes (a), hence the named Instruments are used to measure smaller currents, in the milliampere or microampere range, are designated as milliammeters or microammeters.
Hence-
(i) Ammeter is connected in series to the circuit.
(ii) It must have the following legitimate resistance.
(iii) Ammeter Draws less power.

Barometer is a device used to measure atmospheric pressure.
• A barometer can also be used to measure altitude. There are two main types of barometers: mercury and aneroid.

• A lactometer is used to find out the amount of water in the milk.

• A thermometer is an instrument that measures temperature.

• Multimeter is a testing tool used to measure two or more electrical values.

Submarines have a special device called a periscope that allows people inside the submarine to see what’s going on above the level of sea. The main part of a periscope is a long tube that has a mirror at each end. The mirrors are attached so that they are parallel to each other at a 45-degree angle. Arranged in this way, the mirrors bounce reflection of light between them.

Sound pollution is measured in ‘Decibel’

The electrical equivalent of one horsepower is 746 watts in the International System of Unit (SI) or one horsepower is equal to the 746 Joule per sec.

The electrical equivalent of one horsepower is 746 watts in the International System of Unit (SI) or one horsepower is equal to the 746 Joule per sec.

An ammeter is a measuring instrument used to measure the current in a circuit. Electric currents are measured in amperes (a), hence the named Instruments are used to measure smaller currents, in the milliampere or microampere range, are designated as milliammeters or microammeters.
Hence-
(i) Ammeter is connected in series to the circuit.
(ii) It must have the following legitimate resistance.
(iii) Ammeter Draws less power.