# MCQ Questions For Class 11 Physics Chapter 2 Units and Measurement

Units and Measurements Class 11 MCQ with Answers have been gathered for students to rehearse. Students can prepare these Unit and Measurement Class 11 MCQ. Each question has four choices with answers. Firstly, Solve all these Questions and check your answer with the right answer. If your answers do not match with the right answer, Don’t worry try again because You need to prepare daily to score higher marks in the Class 11 Exam.

Students can refer to the following MCQ on units and measurements class 11 PDF with Answers provided below based on the latest curriculum and examination pattern issued by CBSE and NCERT. Our teachers have provided here a collection of multiple-choice questions for Chapter 2 Units and Measurement Class 11 Physics covering all topics in your textbook so that students can assess themselves on all important topics and thoroughly prepare for their exams

## Units and Measurements Class 11 MCQ PDF with Answer

We have provided below MCQ on units and measurements class 11 PDF with answers which will help the students to go through the entire syllabus and practice multiple choice questions provided here with solutions. As MCQ Questions for Class 11 Physics pdf download can be really scoring for students, you should go through all problems provided below so that you are able to get more marks in your exams.

#### MCQ Questions for Class 11 Units and Measurement

Question. [MLT–1] + [MLT–1] = ………….   B
(a) [M°L°T°]
(b) [MLT–1]
(c) 2[MLT–1]
(d) None of these

B

Question. The dimensions of pressure is equal to
(a) force per unit volume
(b) energy per unit volume
(c) force
(d) energy

B

Question. The dimensional formula of angular velocity is
(a) [MLT–1]
(b) [M0L0T]
(c) [ML0T–2]
(d) [M0L0T–1]

D

Question. The unit of thermal conductivity is
(a) W m–1 K–1
(b) J m K–1
(c) J m–1 K–1
(d) W m K–1

A

Question. The damping force on an oscillator is directly proportional to the velocity. The units of the constant of proportionality are
(a) kg m s–1
(b) kg m s–2
(c) kg s–1
(d) kg s

C

Question. The unit of permittivity of free space, e0, is
(a) coulomb/newton-metre
(b) newton-metre2/coulomb2
(c) coulomb2/newton-metre2
(d) coulomb2/(newton-metre)2

C

Question. A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge is
(a) 0.01 mm
(b) 0.25 mm
(c) 0.5 mm
(d) 1.0 mm

C

Question. In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2%, 3% and 4% respectively. Then the maximum percentage of error in the measurement X, where X = A2B1/2 /C1/3D3 will be
(a) 10%
(b) (3/13)%
(c) 16%
(d) –10%

C

Question. The main scale of a vernier callipers has n divisions/cm. n divisions of the vernier scale coincide with (n – 1) divisions of main scale. The least count of the vernier callipers is
(a) 1 /(n+1)(n-1)cm
(b) 1/n cm
(c) 1/ncm
(d) 1 /n(n + 1) cm

C

Question. A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm.
The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of
–0.004 cm, the correct diameter of the ball is
(a) 0.521 cm
(b) 0.525 cm
(c) 0.053 cm
(d) 0.529 cm

D

Question. In an experiment, four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quantity P is calculated as follows
P a3b2 /cd . % error in P is
(a) 7%
(b) 4%
(c) 14%
(d) 10%

C

Question. A student measures the distance traversed in free fall of a body, initially at rest, in a given time. He uses this data to estimate g, the acceleration due to gravity. If the maximum percentage errors in measurement of the distance and the time are e1 and e2 respectively, the percentage error in the estimation of g is
(a) e2 – e1
(b) e1 + 2e2
(c) e1 + e2
(d) e1 – 2e2

B

Question. If the error in the measurement of radius of a sphere is 2%, then the error in the determination of volume of the sphere will be
(a) 8%
(b) 2%
(c) 4%
(d) 6%

D

Question. The density of a cube is measured by measuring its mass and length of its sides. If the maximum error in the measurement of mass and lengths are 3% and 2% respectively, the maximum error in the measurement of density would be
(a) 12%
(b) 14%
(c) 7%
(d) 9%.

D

Question. Percentage errors in the measurement of mass and speed are 2% and 3% respectively. The error in the estimate of kinetic energy obtained by measuring mass and speed will be
(a) 8%
(b) 2%
(c) 12%
(d) 10%.

A

Question. A certain body weighs 22.42 g and has a measured volume of 4.7cc. The possible error in the measurement of mass and volume are 0.01 g and 0.1 cc. Then maximum error in the density will be
(a) 22%
(b) 2%
(c) 0.2%
(d) 0.02%.

B

Question. Taking into account of the significant figures, what is the value of 9.99 m – 0.0099 m?
(a) 9.9801 m
(b) 9.98 m
(c) 9.980 m
(d) 9.9 m

B

Question. Dimensions of stress are
(a) [MLT–2]
(b) [ML2T–2]
(c) [ML0T–2]
(d) [ML–1 T–2]

D

Question. The pair of quantities having same dimensions is
(a) Impulse and Surface Tension
(b) Angular momentum and Work
(c) Work and Torque
(d) Young’s modulus and Energy

C

Question. The dimensions of (m0e0)–1/2 are
(a) [L1/2T–1/2]
(b) [L–1T]
(c) [LT–1]
(d) [L1/2T1/2]

C

Question. The dimension of 1/2 εE2 ,where e0 is permittivity of free space and E is electric field, is
(a) ML2T–2
(b) ML–1T–2
(c) ML2T–1
(d) MLT–1

B

Question. If the dimensions of a physical quantity are given by MaLbTc, then the physical quantity will be
(a) velocity if a = 1, b = 0, c = – 1
(b) acceleration if a = 1, b = 1, c = – 2
(c) force if a = 0, b = – 1, c = – 2
(d) pressure if a = 1, b = –1, c = –2

D

Question. Which two of the following five physical parameters have the same dimensions ?
1. energy density
2. refractive index
3. dielectric constant
4. Young’s modulus 5. magnetic field
(a) 1 and 4
(b) 1 and 5
(c) 2 and 4
(d) 3 and 5

A

Question. Dimensions of resistance in an electrical circuit, in terms of dimension of mass M, of length L, of time T and of current I, would be
(a) [ML2T–2]
(b) [ML2T–1I–1]
(c) [ML2T–3I–2]
(d) [ML2T–3I–1]

B

Question. The ratio of the dimensions of Planck’s constant and that of moment of inertia is the dimensions of
(a) time
(b) frequency
(c) angular momentum
(d) velocity.

B

Question. The dimensions of universal gravitational constant are
(a) [M–1L3T–2]
(b) [ML2T–1]
(c) [M–2L3T–2]
(d) [M–2L2T–1]

A

Question. The dimensions of Planck’s constant equals to that of
(a) energy
(b) momentum
(c) angular momentum
(d) power.

C

Question. Which pair do not have equal dimensions ?
(a) Energy and torque
(b) Force and impulse
(c) Angular momentum and Planck’s constant
(d) Elastic modulus and pressure.

B

Question. The dimensions of impulse are equal to that of
(a) pressure
(b) linear momentum
(c) force
(d) angular momentum

B

Question. Which of the following dimensions will be the same as that of time?
(a) L /R
(b) C /L
(c) LC
(d) R /L

A

Question. The dimensions of RC is
(a) square of time
(b) square of inverse time
(c) time
(d) inverse time.

C

Question. Which of the following has the dimensions of pressure?
(a) [MLT–2]
(b) [ML–1T–2]
(c) [ML–2T–2]
(d) [M–1L–1]

B

Question. Of the following quantities, which one has dimensions different from the remaining three ?
(a) Energy per unit volume
(b) Force per unit area
(c) Product of voltage and charge per unit volume
(d) Angular momentum.

D

Question. The dimensional formula of magnetic flux is
(a) [M0L–2T–2A–2]
(b) ML0T–2A–2]
(c) [ML2T–2A–1]
(d) [ML2T–1A3]

C

Question. The dimensional formula of permeability of free space m0 is
(a) [MLT–2A–2]
(b) [M0L1T]
(c) [M0L2T–1A2]
(d) none of these.

A

Question. According to Newton, the viscous force acting between liquid layers of area A and velocity gradient Δv/ΔZ is given by F = -ηA Δv /ΔZ where h is constant called coefficient of viscosity. The dimensional formula of h is
(a) [ML–2T–2]
(b) [M0L0T0]
(c) [ML2T–2]
(d) [ML–1T–1].

D

Question. Dimensional formula of self inductance is
(a) [MLT–2A–2]
(b) [ML2T–1A–2]
(c) [ML2T–2A–2]
(d) [ML2T–2A–1]

C

Question. The dimensional formula of torque is
(a) [ML2T–2]
(b) [MLT–2]
(c) [ML–1T–2]
(d) [ML–2T–2].

A

Question. If C and R denote capacitance and resistance, the dimensional formula of CR is
(a) [M0L0T1]
(b) [M0L0T0]
(c) [M0L0T–1]
(d) not expressible in terms of MLT.

A

Question. The dimensional formula of angular momentum is
(a) [ML2T–2]
(b) [ML–2T–1]
(c) [MLT–1]
(d) [ML2T–1].

D

Question. Planck’s constant (h), speed of light in vacuum (c) and Newton’s gravitational constant (G) are three fundamental constants. Which of the following combinations of these has the dimension of length ?
(a) √hG /c3/2
(b) √hG /c5/2
(c) √hc/G
(d) √Gc/h3/2

A

Question. If dimensions of critical velocity vc of a liquid flowing through a tube are expressed as [hxryrz] where h, r and r are the coefficient of viscosity of liquid, density of liquid and radius of the tube respectively, then the values of x, y and z are given by
(a) –1, –1, –1
(b) 1, 1, 1
(c) 1, –1, –1
(d) –1, –1, 1

C

Question. If force (F), velocity (V) and time (T) are taken as fundamental units, then the dimensions of mass are
(a) [FVT–1]
(b) [FVT–2]
(c) [FV–1T–1]
(d) [FV–1T]

D

Question. The density of a material in CGS system of units is 4 g cm–3. In a system of units in which unit of length is 10 cm and unit of mass is 100 g, the value of density of material will be
(a) 0.04
(b) 0.4
(c) 40
(d) 400

C

Question. The velocity v of a particle at time t is given by v=at + b/t+c where a, b and c are constants. The dimensions of a, b and c are
(a) [L], [LT] and [LT–2]
(b) [LT–2], [L] and [T]
(c) [L2], [T] and [LT–2]
(d) [LT–2], [LT] and [L].

B

Question. An equation is given here (p + a/v2) = b.Θ/V where P = Pressure, V = Volume and q = Absolute temperature. If a and b are constants, the dimensions of a will be
(a) [ML–5T–1]
(b) [ML5T1]
(c) [ML5T–2]
(d) [M–1L5T2].

C

Question. Which of the following is a dimensional constant?
(a) Relative density
(b) Gravitational constant
(c) Refractive index
(d) Poisson’s ratio

B

Question. Turpentine oil is flowing through a tube of length l and radius r. The pressure difference between the two ends of the tube is P. The viscosity of oil is given by η= P(r2 – x2) / 4vl where v is the velocity of oil at a distance x from the axis of the tube. The dimensions of h are
(a) [M0L0T0]
(b) [MLT–1]
(c) [ML2T–2]
(d) [ML–1T–1]

D

Question. The time dependence of a physical quantity p is given by p = p0 exp (–at2), where a is a constant and t is the time. The constant a
(a) is dimensionless
(b) has dimensions [T–2]
(c) has dimensions [T2]
(d) has dimensions of p

B

Units and Measurements Class 11 Physics Chapter 2 MCQ has been gathered for students to rehearse. Students can prepare this Units and Measurements Class 11 Physics Chapter 2 MCQ. Each question has four choices with answers. Firstly, Solve all these Questions and check your answer with the right answer. If your answers do not match with the right answer, Don’t worry try again because You need to prepare daily to score higher marks in the Class 11 Physics Exam.

We hope you liked MCQ Questions for Class 11 Units and Measurement with answers pdf provided above. Incase you have any questions please put them in the comments section below. Our faculty will provide a response.

We hope this Units and Measurements Class 11 MCQ shared with you will help you to get good marks in your exam. We have also other study materials like NCERT Solutions, NCERT Book, Exam Question, and sampler paper of Class 11. If You want to score higher in your exam, So practice all this study material and if you have any problem in regard to the Unit and Measurement Class 11 MCQ then, write it in the comment box and we will guide you as much as possible.

## 3 thoughts on “MCQ Questions For Class 11 Physics Chapter 2 Units and Measurement”

1. Aman says:

Too hard questions these aren’t asked in exam😡😡

1. Atithi says:

Bro these ques hv been asked from this chapter in the NEET/AIPMT till date