Wednesday, 21 September 2022

QUIZ: UNITS AND MEASUREMENTS

 

Q1 Of the following which is the unit of distance 

  • parsec
  • light year
  • astronomical Unit
  • All the three

All the three 


Q2 One light year is equal to 

  • `3\times10^{6}`
  • `4\times10^{8}`
  • `9.46\times10^{15}`m
  • `3\times10^{9}`

`3\times10^{8}` 


Q3 Who discovered the law of gravitation? 

  • Newton
  • Henry Becquerel
  • Pierre Curie
  • none of these

Newton 

Q4 Which of the following is not a unit of distance? 

  • Angstrom
  • Fermi
  • barn
  • parsec

barn 

Q5 Which one of the following is not a unit of time? 

  • Lunar month
  • solar day
  • leap year
  • parallactic second

parallactic second 

Q6 A dimensionless quantity 

  • never has a unit
  • always has a unit
  • may have a unit
  • does not exist

may have a unit 

Q7 The physical quantity strain has . 

  • fundamental unit
  • Basic unit
  • No unit
  • No unit

No unit 

Q8 Optical fibres are based on 

  • Total internal reflection
  • Refraction
  • Dispersion
  • polarization

Total internal reflection 

Q9 Which of the following is wrongly matched? 

  • Calorimeter – Humidity
  • Coulomb’s law – Charges
  • Barometer- Pressure
  • Lactometer - Milk

Calorimeter – Humidity 

Q10 Strong nuclear force is how many times stronger than Gravitational force 

  • `10^{28}`
  • `10^{8}`
  • `10^{18}`
  • `10^{38}`

`10^{38}` 

Q10 Strongest force in nature is 

  • Gravitational force
  • Electromagnetic force
  • Nuclear force
  • Weak force

Nuclear force 

Q10 Electromagnetic force is 

  • attractive in nature
  • repulsive in nature
  • attractive as well as repulsive in nature
  • none of these

attractive as well as repulsive in nature 


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