Physics ยท 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

What is the name of the device that is used to measure the force of gravity?

  1. Spring scale

  2. Balance scale

  3. Gravitometer

  4. Pendulum
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A gravitometer is a device that is used to measure the force of gravity. It works by measuring the acceleration of an object due to gravity.

Multiple choice

What is the name of the device that is used to measure the force of friction?

  1. Spring scale

  2. Balance scale

  3. Gravitometer

  4. Tribometer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A tribometer is a device that is used to measure the force of friction. It works by measuring the force required to move one surface across another.

Multiple choice

What is the name of the device that is used to measure the work done by a force?

  1. Spring scale

  2. Balance scale

  3. Gravitometer

  4. Dynamometer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A dynamometer is a device that is used to measure the work done by a force. It works by measuring the force and the distance through which the force is applied.

Multiple choice

What is the name of the device that is used to measure the energy of a system?

  1. Spring scale

  2. Balance scale

  3. Gravitometer

  4. Calorimeter
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A calorimeter is a device that is used to measure the energy of a system. It works by measuring the heat transferred to or from the system.

Multiple choice

What is the name of the device that is used to measure the acceleration of an object?

  1. Spring scale

  2. Balance scale

  3. Gravitometer

  4. Accelerometer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An accelerometer is a device that is used to measure the acceleration of an object. It works by measuring the force acting on the object and dividing it by the mass of the object.

Multiple choice

What is the name of the device that is used to measure the mass of an object?

  1. Spring scale

  2. Balance scale

  3. Gravitometer

  4. Mass spectrometer
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A balance scale is a device that is used to measure the mass of an object. It works by comparing the weight of the object to the weight of a known mass.

Multiple choice

Which site survey method involves using a resistivity meter to measure variations in the electrical resistance of the soil?

  1. Pedestrian Survey

  2. Remote Sensing

  3. Geophysical Survey

  4. Resistivity Survey
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Resistivity survey involves using a resistivity meter to measure variations in the electrical resistance of the soil.

Multiple choice

What is the primary function of a multimeter?

  1. Measuring voltage

  2. Measuring current

  3. Measuring resistance

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

A multimeter is a versatile tool that can measure voltage, current, and resistance, making it useful for electrical troubleshooting and testing.

Multiple choice

What is the purpose of a multimeter?

  1. Measuring voltage

  2. Measuring current

  3. Measuring resistance

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

A multimeter is a versatile tool that can measure voltage, current, and resistance, making it useful for electrical troubleshooting and testing.

Multiple choice

Which of the following is NOT a common type of sensor used in IoT devices to measure pressure?

  1. Barometer

  2. Piezoelectric sensor

  3. Strain gauge

  4. Thermistor
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Thermistors are not typically used to measure pressure, but rather to measure temperature.

Multiple choice

What is the purpose of a mobile device's barometer?

  1. To measure the device's orientation

  2. To measure the device's acceleration

  3. To measure the device's speed

  4. To measure the device's air pressure
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A barometer is used to measure the device's air pressure.

Multiple choice

What is the purpose of a barometer on a smartwatch?

  1. To measure altitude

  2. To measure air pressure

  3. To measure temperature

  4. To measure humidity
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Barometers are used to measure air pressure, which can be useful for tracking changes in weather conditions.

Multiple choice

Which type of sensor is commonly used in pulse oximeters to measure blood oxygen saturation?

  1. Thermistor

  2. Photodiode

  3. Piezoelectric sensor

  4. Strain gauge
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pulse oximeters utilize photodiodes to measure blood oxygen saturation by transmitting and detecting light of specific wavelengths through the patient's finger or earlobe.

Multiple choice

Which of the following is a common type of biosensor used to detect the presence of specific molecules or substances in a sample?

  1. Accelerometer

  2. Gyroscope

  3. Immunosensor

  4. Piezoelectric sensor
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Immunosensors are biosensors that utilize antibodies or antigens to detect the presence of specific molecules or substances, such as proteins, hormones, or pathogens, in a sample.

Multiple choice

Which of the following is a common type of sensor used in medical devices to measure temperature?

  1. Thermistor

  2. Photodiode

  3. Piezoelectric sensor

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

Thermistors are commonly used in medical devices to measure temperature due to their high sensitivity and ability to detect small changes in temperature.