Here we will provide you the 50+ MCQ Questions of Units and Measurements for NEET-UG. Physical World is the chapter 2 in Class XI or Class 11 Physics NCERT Unit Units and Measurements NEET (conducted by NTA) is based on the NCERT book.
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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Units and Measurements NEET MCQ Questions with Answers.
Units and Measurements NEET MCQ
The dimensions of a physical quantity are given by [M^2 L^-1 T^-2]. Which of the following quantities could have these dimensions?
A. Work
B. Pressure
C. Energy
D. Force
The dimensions of a physical quantity are given by [M^0 L^1 T^-2]. Which of the following quantities could have these dimensions?
A. Speed
B. Energy
C. Acceleration
D. Force
The absolute error in the measurement of a quantity is 0.1 cm. What is the relative error in the measurement if the quantity is 2 cm?
A. 0.05
B. 0.1
C. 0.2
D. 0.5
Which of the following is a derived unit?
A. Kilogram
B. Second
C. Meter
D. Newton
If the length of a rectangle is measured as 12.5 cm with an error of 0.1 cm and the width is measured as 6.0 cm with an error of 0.05 cm, what is the area of the rectangle and its uncertainty in the area?
A. 75.0 cm^2, ± 0.5 cm^2
B. 75.0 cm^2, ± 0.55 cm^2
C. 75.0 cm^2, ± 0.65 cm^2
D. 75.0 cm^2, ± 0.75 cm^2
If a physical quantity P depends on three variables x, y and z as P = kx^2 y / z^3, where k is a constant, what is the dimension of k?
A. [M^0 L^0 T^0]
B. [M^1 L^0 T^0]
C. [M^1 L^2 T^-3]
D. [M^-1 L^-2 T^3]
The period of a simple pendulum depends on its length and the acceleration due to gravity. Which of the following is the correct equation for the period T of a simple pendulum?
A. T = k L^2 / g
B. T = k L / g^2
C. T = k L^3 / g
D. T = k L / g
The speed of sound in air at 0°C is 331 m/s. What is the speed of sound in air at 27°C? (Assume pressure and humidity are constant.)
A. 337 m/s
B. 343 m/s
C. 350 m/s
D. 356 m/s
A body moves a distance of 10 m in the first second of its motion and a distance of 14 m in the next second. What is the average speed of the body during the two seconds?
A. 11 m/s
B. 12 m/s
C. 12.5 m/s
D. 13 m/s
The value of acceleration due to gravity on the surface of the Earth is maximum at:
A. The equator
B. The North Pole
C. The South Pole
D. The Tropic of Cancer
A particle moves in a straight line with a constant acceleration. The distance covered by it in the fourth second of its motion is 20 m. What is the distance covered by it in the first three seconds?
A. 40 m
B. 50 m
C. 60 m
D. 70 m
The formula for kinetic energy is K = 1/2 mv^2. What are the dimensions of K in terms of mass (M), length (L) and time (T)?
A. [M L T^-2]
B. [M L^2 T^-2]
C. [M L^2 T^-3]
D. [M L^3 T^-2]
Which of the following statements about dimensions is false?
A. Dimensions of a physical quantity are independent of the system of units used.
B. Dimensional analysis is a powerful tool for solving problems in physics.
C. Two physical quantities having the same dimensions are necessarily equal.
D. The dimension of a physical quantity can be expressed in terms of the fundamental dimensions.
Which of the following quantities is a scalar quantity?
A. Velocity
B. Acceleration
C. Force
D. Energy
The radius of a sphere is measured as 4.20 cm with an error of 0.05 cm. What is the volume of the sphere and its uncertainty in volume?
A. 310.5 cm^3, ± 4.02 cm^3
B. 310.5 cm^3, ± 4.27 cm^3
C. 310.5 cm^3, ± 4.52 cm^3
D. 310.5 cm^3, ± 4.77 cm^3
The angular velocity of a rotating object is given by ω = 2π / T, where T is the time period. What are the dimensions of ω in terms of length (L) and time (T)?
A. [L^0 T^-1]
B. [L^1 T^-1]
C. [L^-1 T^-1]
D. [L^2 T^-1]
The surface tension of a liquid is measured as 0.04 N/m with an error of 0.002 N/m. What is the percentage error in the measurement?
A. 2.5%
B. 4.0%
C. 5.0%
D. 7.5%
Which of the following units is not an SI unit?
A. Meter
B. Newton
C. Ampere
D. Foot
The dimensions of a physical quantity are given by [M L^2 T^-1]. Which of the following quantities could have these dimensions?
A. Angular momentum
B. Torque
C. Energy
D. Power
A meter scale has 100 divisions marked on it. The smallest possible reading that can be taken with this scale is:
A. 0.01 cm
B. 0.1 cm
C. 1 cm
D. 10 cm
A car is moving with a constant velocity of 30 m/s. If it takes 10 seconds to come to a complete stop, what is the distance covered by the car during this time?
A. 150 m
B. 300 m
C. 450 m
D. 600 m
If the length, mass and time are chosen as fundamental units, then the dimensional formula for density will be:
A. [L M T^-2]
B. [L^-1 M T^-1]
C. [L^2 M^-1 T^-1]
D. [L M T]
Which of the following is a derived unit in the SI system?
A. Kilogram
B. Meter
C. Second
D. Newton
Which of the following quantities is a vector quantity?
A. Pressure
B. Density
C. Temperature
D. Force
The density of a substance is measured as 2.00 g/cm^3 with an uncertainty of 0.02 g/cm^3. What is the percentage uncertainty in the density?
A. 1%
B. 2%
C. 10%
D. 20%
The period of oscillation of a simple pendulum is given by T = 2Ï€(l/g)^1/2, where l is the length of the pendulum and g is the acceleration due to gravity. What are the dimensions of T in terms of length (L) and time (T)?
A. [L^1/2 T^1/2]
B. [L T^-2]
C. [L^2 T^-2]
D. [L T]
The velocity of a particle is given by v = (t^2 – 4t) m/s. What is the maximum possible error in the measurement of the velocity if the error in the measurement of time is ± 0.1 s?
A. 0.4 m/s
B. 0.5 m/s
C. 0.6 m/s
D. 0.7 m/s
Which of the following quantities is not a fundamental quantity in the SI system?
A. Mass
B. Length
C. Time
D. Temperature
Which of the following pairs of physical quantities have the same dimensions?
A. Work and power
B. Torque and impulse
C. Pressure and Young’s modulus
D. Gravitational potential energy and kinetic energy
A physical quantity has a value of 3.5 with an uncertainty of ± 0.1. What is the percentage uncertainty in the quantity?
A. 2.8%
B. 2.9%
C. 3.0%
D. 3.1%
The speed of light in a medium is given by v = c/n, where c is the speed of light in vacuum and n is the refractive index of the medium. What is the dimension of n?
A. Dimensionless
B. [L]
C. [L^2 T^-1]
D. [L^-1]
The dimensional formula for capacitance is:
A. [L^-1 T^4 A^2]
B. [L^2 T^-2 A^-1]
C. [L^-2 T^2 A^2]
D. [L^-2 T^4 A^2]
We hope there NEET MCQ of Class 11 Units and Measurements will help you to score an excellent rank in NEET-UG. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
