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NCERT MCQ CLASS-11 CHAPTER-2 | PHYSICS NCERT MCQ | UNITS AND MEASUREMENT | EDUGROWN

In This Post we are  providing Chapter-2 Units and Measurement NCERT MCQ for Class 11 Physics which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON UNITS AND MEASUREMENT

Question 1 :  One second is defined to be equal to

• a) 9192631770 periods of the cesium clock
• b) 1650763.73 periods of the cesium clock
• c) 652189.63 periods of the krypton clock
• d) 1650763.73 periods of the krypton clock

Answer :  9192631770 periods of the cesium clock

Question 2 :  One yard in SI unit is equal to

• a) 0.9144 metre
• b) 1.0936 kilometre
• c) 1.9144 metre
• d) 0.09144 kilometre

Answer :  0.9144 metre

Question 3 :  One pico farad is equal to

• a) 10^–12 farad
• b) 10^–24 farad
• c) 10^–18 farad
• d) 10^–6 farad

Answer :  10^–12 farad

Question 4 :  ‘Torr’ is the unit of

• a) pressure
• b) volume
• c) density
• d) flux

Answer :  pressure

Question 5 :  Very large distances such as the distance of a Planet or a star from Earth can be measured by

• a) Parallax method
• b) All of these
• c) Millikan’s oil drop method
• d) Spectrograph

Answer :  Parallax method

Question 6 :  Joule second is a unit of

• a) angular momentum
• b) torque
• c) energy
• d) power

Answer :  angular momentum

Question 7 :  Temperature can be expressed as derived quantity in terms of

• a) None of these
• b) mass and time
• c) length and mass
• d) length, mass and time

Answer :  None of these

Question 8 :  Unit of specific resistance is

• a) ohm – m
• b) ohm/m
• c) ohm m³
• d) ohm/m²

Answer :  ohm – m

Question 9 :  Unit of magnetic moment is

• a) ampere–metre²
• b) weber–metre²
• c) ampere–metre
• d) weber/metre

Answer :  ampere–metre²

 

Question 10 :  Dimensional analysis can be applied to

• a) All of these
• b) to convert from one system of units to another
• c) deduce relations among the physical quantities
• d) check the dimensional consistency of equations

Answer :  All of these

Question 11 :  The dimensions of pressure is equal to

• a) energy per unit volume
• b) energy
• c) force
• d) force per unit volume

Answer :  energy per unit volume

Question 12 :  Which is dimensionless?

• a) Force/acceleration
• b) Velocity/acceleration
• c) Energy/work
• d) Volume/area

Answer :  Force/acceleration

Question 13 :  The dimensions of torque are

• a)
• b)
• c)
• d)

Answer :

Question 14 :  The division of energy by time is X. The dimensional formula of X is same as that of

• a) power
• b) electric field
• c) momentum
• d) torque

Answer :  power

Question 15 :  Which of the following is a dimensional constant?

• a) Gravitational constant
• b) Dielectric constant
• c) Refractive index
• d) Relative density

Answer :  Gravitational constant