(Set 2) Unit, Measurements and Effects

Q1. 
Hertz is the SI unit of
  1. Frequency
  2. force
  3. pressure
  4. energy

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Correct Answer : A

Q2. 
The SI unit for electrical resistivity is
  1. ampere/meter
  2. volt/metre
  3. tesla
  4. ohm metre

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Correct Answer : D

Q3. 
Which of the following quantities have its SI units named after Blaise Pascal?
  1. Energy
  2. Pressure
  3. Work
  4. Power

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Correct Answer : B

Q4. 
Light Year is
  1. light emitted by sun in one year.
  2. time taken by light to travel from sun to Earth
  3. the distance travelled by light in free space in one year
  4. time taken by Earth to go once around the sun

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Correct Answer : C

Q5. 
A nautical mile is equal to .............
  1. 2000 metres
  2. 1852 metres
  3. 1672 metres
  4. 2450 metres

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Correct Answer : D

Q6. 
Which One of the following is the value of 1 nanometre?
  1. 10^-7 cm
  2. 10^-6 cm
  3. 10^-4 cm
  4. 10^-3 cm

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Correct Answer : A

Q7. 
1 dyne (a unit of force in CGS system) equals to
  1. 10^3g-cm / s^2
  2. 10^-3g-cm / s^2
  3. 10^5kg-cm /s^2
  4. 10^-5kg-m /s^2

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Correct Answer : D

Q8. 
If a physical quantity has the units- ampere meters per second squared, then what are its dimensions?
  1. [I LT^-2]
  2. [A LT^-2]
  3. [I MS^-2]
  4. [AMS^-2]

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Correct Answer : A

Q9. 
Which instrument is used to measure humidity?
  1. Hydrometer
  2. Hygrometer
  3. Pyrometer
  4. Lactometer

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Correct Answer : B

Q10. 
Electroencephalogram (ECG) is used in monitoring
  1. heart
  2. liver
  3. pancreas
  4. brain

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Correct Answer : D

Q11. 
Which one of the following thermometers is known as pyrometer?
  1. Thermo - electric thermometers
  2. Radiation thermometers
  3. Gas thermometers
  4. Liquid Thermometers

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Correct Answer : B

Q12. 
Which one of the following devices is used to measure extremely high temperature?
  1. Pyrometer
  2. Photometer
  3. Phonometer
  4. Pycnometer

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Correct Answer : A

Q13. 
Pyrheliometer is used for measuring
  1. sun spots
  2. solar radiation
  3. air temperature
  4. temperature of plants

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Correct Answer : B

Q14. 
The density of milk is measured by
  1. lactometer
  2. Hydrometer
  3. barometer
  4. hygrometer

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Correct Answer : A

Q15. 
A student measures certain lengths using a meter scale having least count equal to 1 mm. Which one of the following measurement is more precise?
  1. 0.50 mm
  2. 29.07 mm
  3. 0.925 mm
  4. 910 mm

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Correct Answer : A

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