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Practical Units MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

Quick Facts

  • Practical units is considered one of the most asked concept.

  • 5 Questions around this concept.

Concepts Covered - 0

Practical units

     

  1. Practical units of  length 

Name

Symbol

Conversion in m

1 fermi   

1 fm

m

1 X-ray unit

1 XU 

m

1 Angstrom  

m

1 micron 

m

1 Astronomical unit

1 AU

1 Light year

1 ly 

1 Parsec 

1 Pc

3.26 light year

 

  1. Practical units of mass

 

Name

Symbol

Conversion in kilogram (Kg)

1 Chandra Shekhar Unit

1 CSU

= 1.4 times the mass of the sun

1 Metric tonne 

1 Metric tonne 

1000 kg

1 Quintal  

1 Quintal  

100 kg

1 Atomic mass unit

1 amu

 

  1. Practical units of  Time

  • 1 year =365.25 days = Sec

  • Lunar Month-27.3 days  (It is the time taken by the moon to complete 1 revolution around the earth in its orbit)

  • Solar day-It is the time taken by the earth to complete one rotation about its axis with respect to Sun.

  • Sidereal day- It is the time taken by the earth to complete one rotation about its axis with respect to a distant star.

  • 1 Solar year- 366.25 sidereal days = 365.25 average solar day

  • 1 Average Solar Day=    (\frac{1}{365.25})^{th} part of the solar year

  • 1 solar second  = \frac{1}{86400}^{th}part of the mean solar day

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