QUIZ: UNITS AND MEASUREMENTS UNIT -1

 

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