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 


PHYSICS QUIZ : PHYSICAL WORLD AND MEASUREMENTS PART -1

Q1 Which of the following is a fundamental force of nature 

  • Tension in the spring
  • friction
  • restoring force in a stretched spring
  • gravitation

gravitation 


Q2 Force of friction and tension in a string are 

  • Weak force
  • Electromagnetic force
  • Nuclear force
  • gravitation

Electromagnetic force 


Q3 The process of measurement is basically 

  • a process of estimation
  • a process of comparison
  • a process of ease
  • none of these

a process of comparison 


Q4 The quantity whose unit is treated as derived unit is 

  • Length
  • time
  • mass
  • speed

Speed 


Q5 Which is the unit of a fundamental physical quantity? 

  • Kg
  • m/s
  • Kgs
  • None of these

Kg 


Q6 Characteristic of a standard unit is 

  • It should not change with time
  • It should be well defined
  • It should be of suitable size
  • all of these

all of these 


Q7 Light year is a unit of . 

  • Time
  • Mass
  • distance
  • all of these

Distance 


Q8 Which of the following quantity is measured in kelvin? 

  • Time
  • Mass
  • distance
  • temperature

temperature 


Q9 Which of the following is not a fundamental quantity? 

  • Time
  • Mass
  • velocity
  • temperature

Velocity 


Q10 The SI unit of luminous intensity is 

  • Second
  • Candela
  • mole
  • m/s

Candela 


PHYSICS QUIZ: PHYSICAL WORLS AND MEASUREMENTS PART-2 TRUE/FALSE

Q1 In SI system there are seven fundamental and two supplementary units. 

  • True
  • False

True 


Q2 In MKS system the units of length, mass and time are metre, kilogram and second. 

  • True
  • False

True 


Q3 The SI unit of electric current is mole. 

  • True
  • False

False 


Q4 Light year is a unit of time. 

  • True
  • False

False 


Q5 Momentum is a fundamental physical quantity. 

  • True
  • False

False 


Q6 The two masses repel each other due to gravitational force 

  • True
  • False

False 


Q7 The electrostatic force between two charges follow inverse square law. 

  • True
  • False

True 


Q8 Rocket works on the principle of conservation of momentum 

  • True
  • False

True 


Q9 S.I. is not an absolute system of units. 

  • True
  • False

False 


Q10 S.I. is accepted by India only. 

  • True
  • False

&nbsFalse;


Q11 Planet is not a astronomical objects 

  • True
  • False

False 


Q12 In SI system there are seven fundamental and two supplementary units. 

  • True
  • False

True 


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