Physics Chapter 1 – Measurements (Class 11) for FSC, Entry Tests & NTS Preparation
Chapter 1, Measurements, is a fundamental topic for Class 11 students preparing for FSC board exams, engineering entry tests like ECAT, NUST, FAST, and NTS exams. This chapter explains the methods and standards used to measure physical quantities and the importance of accurate measurement in physics. Understanding measurements is essential for studying all branches of physics and solving numerical problems effectively.
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1 Inch = —- cm
Ratio of Nano to Atto Is:
What is 1 radian in degrees approximately
PMC Sample 3
Physics
Measurements
Elimination Tool:
1 femto
a) 10-15
b) 10-9
c) 10-6
d) None
Name the quantity which can be measured by using the base unit kgm2s-3
UHS 2013
Physics
Measurements
Elimination Tool:
The dimensions of volume and acceleration (respectively) are:
NTS 2010
Physics
Measurements
Elimination Tool:
SI unit of acceleration is
Pa m2 is the unit of
Force is a derived quantity, its derived unit can be expressed in terms of the base units as:
UHS 2018
Physics
Measurements
Elimination Tool:
The unit of velocity is:
PMC Sample 2
Physics
Measurements
Elimination Tool:
Which of the following is not a S.I. base quantity.
NUMS 2018
Physics
Measurements
Elimination Tool:
Unit of pressure?
Zeros are always considered significant when they are
Suppose A =4.1, and B= 3.26 and the result from calculator comes to be 1.00876543. What should be the correct number of significant figures In final answer If multiplication and division only?
Percentage uncertainty in length and width of a rectangle is 2% and 3%. The total uncertainty in the area of that rectangle is?
UHS 2019
Physics
Measurements
Elimination Tool:
The different magnitudes of same physical quantities are measured by comparing them to:
UHS 2018
Physics
Measurements
Elimination Tool:
Dimensions of work?
Which one of the following physical quantity does not the dimension of force per unit area
ETEA 2019
Physics
Measurements
Elimination Tool:
The dimensions of angular velocity (ω) is:
NUMS 2019 Cancelled
Physics
Measurements
Elimination Tool:
SI unit of velocity Is
The velocity of a particle is related to time according to the equation
V= ct3. The dimensions of constant are _______.
NTS 2019
Physics
Measurements
Elimination Tool:
When the dimensions of both sides of an equation are equal, then the equation is said to be:
UHS 2011
Physics
Measurements
Elimination Tool:
Which one has least value?
What are the units of a and b In v = a + bt, where unit of v=ms^-1 and t=s
Which set of the prefixes gives values in increasing order?
UHS 2014
Physics
Measurements
Elimination Tool:
if v is the velocity of an object, then the following equation is always:
[1-v2/c2]-0.25
What Is absolute uncertainty In length of 10m measured by scale of precision of 0.1m?
The unit of temperature in base unit is:
UHS 2015
Physics
Measurements
Elimination Tool:
The dimensions of momentum are the same as that of:
PMC 2021 Tested
Physics
Forces and Motion
Measurements
Elimination Tool:
A quantity ? is to be determined from the equation, ? = ? – ?. ? is measured as (1.27 ± 0.02) ? and ? is measured as (0.83 ± 0.01) ?. What is the percentage uncertainty in ? to one significant figure?
ETEA 2018
Physics
Measurements
Elimination Tool:
The length and width of a rectangular plate are measured to be 15.3 mm and 12.50 mm. Find the area of the plate up to an appropriate number of significant figures.
NUMS 2017
Physics
Measurements
Elimination Tool:
Which of the following is dimensionless quantity?
NUMS 2018
Physics
Measurements
Elimination Tool:
1 light year distance is the:
PMC Practice 5
Physics
Measurements
Elimination Tool:
Which of the following is NOT a unit of energy?
PMC 2021 Tested
Physics
Work, Power & Energy
Measurements
Elimination Tool:
Molar mass of water is:
PMC Sample 2
Physics
Measurements
Elimination Tool:
Unit of light year Is:
A metal sphere of radius r is dropped into a tank of water. As it sink at speed v, it experience a drag force F given by F= krv, where k is a constant: What are the SI base units of k?
ETEA 2017
Physics
Measurements
Elimination Tool:
if 5.1 and 3.014 added. the number of significant figures will be in final answer
In SI units, the unit of Candela is used for the measurement of:
NTS 2016 DUHS & JSMU
Physics
Measurements
Elimination Tool:
Which experimental technique reduces the systematic error of the quantity being investigated?
ETEA 2017
Physics
Measurements
Elimination Tool:
Percentage uncertainty in length and width of a rectangle is 2% and 3%. The total uncertainty in the area of that rectangle is?
UHS 2019
Physics
Measurements
Elimination Tool:
Branch of physics which deals with sub atomic particles.
Dimensions of torsional couple Is similar to the dimension of
In the SI system of units, the fundamental units of length, mass, and time are ____, _____ and respectively:
NTS 2019
Physics
Measurements
Elimination Tool:
1 femto is equal to
The SI unit of mass is?
Which measure Is nearest to your height?
What are the Dimensions of P^2/m, where P is the momentum and m is the mass?
Weight Is equivalent to which of the following
Volume of sphere having radius 17 cm Is:
The dimensional formula for change in momentum is same as that for:
ETEA 2018
Physics
Measurements
Elimination Tool:
Parsec(pc) is the unit of ?
Radian Is a:
Identify the dimensions of area, velocity and acceleration respectively: ( where L= Length, T=Time)
NTS 2015 SMBBMC
Physics
Measurements
Elimination Tool:
1 rad is equal to how many degrees
The base units of Young’s Modulus are:
NUMS 2019 Reconduct
Physics
Measurements
Elimination Tool:
Which one of the following Is correct
In the SI system of units, the fundamental units of mass, time and length are ____, _____ and ______ respectively.
NUMS 2019 Reconduct
Physics
Measurements
Elimination Tool:
Which of the following is a supplementary physical quantity?
UHS 2017 Reconduct
Physics
Measurements
Elimination Tool:
Which of the following is not a base unit in the SI system?
NTS 2016 SMBBMC
Physics
Measurements
Elimination Tool:
Least count of micrometer screw gauge is
The dimensions of acceleration are:
NTS 2011
Physics
Measurements
Elimination Tool:
Number of Significant figures in 0.001634 Is:
Electric charge on an object is measured as 5 microcoulombs. How the value of this charge can be expressed in terms of base units:
UHS 2012
Physics
Measurements
Elimination Tool:
Dimension of power?
The number L = 8.0 x 104cm can be expressed as ________.
NUMS 2019 Reconduct
Physics
Measurements
Elimination Tool:
If A = 2.79 and B = 8.1 , then A+B =?
Which of the following quantity has the dimension MLT-1
A value for the acceleration of free fall on earth is given as (10+-2) m s-2. Which statement is correct?
ETEA 2017
Physics
Measurements
Elimination Tool:
If v = a + bt, the dimensions of a and b are
Key Concepts about Measurements
The chapter explains physical quantities and their classification into fundamental and derived quantities. It covers the SI system of units, unit conversions, and significant figures in measurements. The chapter also discusses accuracy, precision, errors, and uncertainties in experiments, and methods to minimize them. Each concept is explained with examples, formulae, and practical applications. These concepts are highly important for FSC board exams, engineering entry tests like ECAT, NUST, FAST, and NTS exams.
Free Entry Test & NTS Preparation
Mastery of measurements helps students perform experiments accurately, solve numerical problems, and understand physical laws. PLS Academy provides practice questions, solved past papers, and chapter-wise MCQs to help students revise these topics effectively. Regular study of this chapter improves problem-solving skills, conceptual clarity, and exam performance, ensuring students are well-prepared for FSC board exams, competitive entry tests, and NTS exams.
JazakAllah.
