Refer to NEET Physics Units and Measurement MCQs Set A provided below available for download in Pdf. The MCQ Questions for Full Syllabus Physics with answers are aligned as per the latest syllabus and exam pattern suggested by NEET, NCERT and KVS. Multiple Choice Questions for Units and Measurement are an important part of exams for Full Syllabus Physics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for NEET Full Syllabus Physics and also download more latest study material for all subjects
MCQ for Full Syllabus Physics Units and Measurement
Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Units and Measurement in Full Syllabus.
Units and Measurement MCQ Questions Full Syllabus Physics with Answers
Question: The number of significant figures in 0.06900 is
a) 4
b) 2
c) 3
d) 5
Answer: 4
Question: The sum of the numbers 436.32, 227.2 and 0.301 in appropriate significant figures is
a) 664
b) 663.8
c) 663.82
d) 663.821
Answer: 664
Question: The mass and volume of a body are 4.237 g and 2.5 cm3, respectively. The density of the material of the body in correct significant figures is
a) 1.7 g cm–3
b) 1.6048 g cm–3
c) 1.69 g cm–3
d) 1.695 g cm–3
Answer: 1.7 g cm–3
Question: The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give
a) 2.74 and 2.74
b) 2.74 and 2.73
c) 2.75 and 2.74
d) 2.75 and 2.73
Answer: 2.74 and 2.74
Question: The length and breadth of a rectangular sheet are 16.2 ± 0.1 cm and 10.1 ± 0.1 cm, respectively. The area of the sheet in appropriate significant figures and error is
a) 164 ± 3 cm2
b) 163.6 ± 2.6 cm2
c) 163.62 ± 2.6 cm2
d) 163.62 ± 3 cm2
Answer: 164 ± 3 cm2
Question: Which of the following pairs of physical quantities does not have same dimensional forrmula?
a) Tension and surface tension
b) Impulse and linear momentum
c) Angular momentum and Planck's constant
d) Work and torque
Answer: Tension and surface tension
Question: Measure of two quantities along with the precision of respective measuring instrument is A = 2.5 ms–1 ± 0.5 ms–1, B = 0.10 s ± 0.01 s. The value of AB will be
a) (0.25 ± 0.08) m
b) (0.25 ± 0.05) m
c) (0.25 ± 0.5) m
d) (0.25 ± 0.135) m
Answer: (0.25 ± 0.08) m
Question:
a) 1.4 m ± 0.2 m
b) 1.41 m ± 0.15 m
c) 1.4 m ± 0.4 m
d) 1.4 m ± 0.3 m
Answer: 1.4 m ± 0.2 m
Question: Which of the following measurement is most precise?
a) 5.00 mm
b) 5.00 m
c) 5.00 cm
d) 5.00 km
Answer: 5.00 mm
Question: The mean length of an object is 5 cm. Which is the following measurement is most accurate?
a) 4.9 cm
b) 5.25 cm
c) 4.805 cm
d) 5.4 cm
Answer: 4.9 cm
Question: Young's modulus of steel is 1.9 × 1011 N/m2. When expressed in CGS units of dyne/cm2, it will be equal to (1N = 105 dyne, 1 m2 = 104 cm2)
a) 1.9 × 1012
b) 1.9 × 1013
c) 1.9 × 1011
d) 1.9 × 1010
Answer: 1.9 × 1012
Question: If momentum (p), area (A) and time (T) are taken to be fundamental quantities, then energy has the dimensional formula
a) [pA1/2T–1]
b) [pA1/2T]
c) [p2AT]
d) None of these
Answer: [pA1/2T–1]
Question: If force (F), velocity (V) and time (T) are taken as fundamental units, then the dimensions of mass are
a) [F V–1 T]
b) [F V T–2]
c) [F V T–1]
d) None of these
Answer: [F V–1 T]
Question:
a)
b)
c)
d)
Answer:
Question: A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it?
a) A vernier calliper where the 10 divisions in vernier scale matches with 9 divisions in main scale and main scale has 10 division in 1 cm.
b) A screw gauge having 100 divisions in the circular scale and pitch as 1 mm.
c) A meter scale.
d) A screw gauge having 50 divisions in the circular scale and pitch as 1 mm.
Answer: A vernier calliper where the 10 divisions in vernier scale matches with 9 divisions in main scale and main scale has 10 division in 1 cm.
Question: The current voltage relation of diode is given by I = (e1000V/T –1) mA, where the applied voltage V is in volt and temperature T is in kelvin. If a student makes an error measuring ± 0.01 V while measuring the current of 5 mA at 300 K, what will be the error in the value of current in mA?
a) 0.2 mA
b) 0.2 mA
c) 0.5 mA
d) 0.05 mA
Answer: 0.2 mA
Question: In a vernier callipers, n divisions of its main scale match with (n + 1) divisions on its vernier scale. Each division of the main scale is a units. Using the vernier principle, calculate its least count.
a)
b)
c)
d)
Answer:
Question: If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, the dimensional formula of surface tension will be :
a)
b)
c)
d)
Answer:
Question:
a) 1, –1, –1
b) –1, –1, –1
c) –1, –1, 1
d) 1, 1, 1
Answer: 1, –1, –1
Question: The least count of a stop watch is 0.2 second. The time of 20 oscillations of a pendulum is measured to be 25 second. The percentage error in the measurement of time will be
a) 0.8%
b) 0.1%
c) 1.8%
d) 8%
Answer: 0.8%
More Questions.............................................
Question:
a) 3%
b) 2%
c) 5%
d) 1%
Answer: 3%
Question:
a) Boltzmann constant
b) Planck’s constant
c) Stefan’s constant
d) Gravitational constant
Answer: Boltzmann constant
Question:
a)
b)
c)
d)
Answer:
Question: Assertion : The number of significant figures depends on the least count of measuring instrument.
Reason : Significant figures define the accuracy of measuring instrument.
a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
b) Assertion is correct, reason is incorrect
c) Assertion is incorrect, reason is correct
d) Assertion is correct, reason is correct; reason is a correct explanation for assertion
Answer: Assertion is correct, reason is correct; reason is not a correct explanation for assertion
Question: A screw gauge with a pitch of 0.5 mm and a circular scale with 50 divisions is used to measure the thickness of a thin sheet of Aluminium. Before starting the measurement, it is found that when the two jaws of the screw gauge are brought in contact, the 45th division coincides with the main scale line and the zero of the main scale is barely visible. What is the thickness of the sheet if the main scale reading is 0.5 mm and the 25th division coincides with the main scale line?
a) 0.80 mm
b) 0.75 mm
c) 0.50 mm
d) 0.70 mm
Answer: 0.80 mm
Question: A student measures the time period of 100 oscillations of a simple pendulum four times. The data set is 90 s, 91 s, 95 s, and 92 s. If the minimum division in the measuring clock is 1 s, then the reported mean time should be
a) 92 ± 2 s
b) 92 ± 1.8 s
c) 92 ± 3s
d) 92 ± 5.0 s
Answer: 92 ± 2 s
Question:
a)
b)
c)
d)
Answer:
Question:
a)
b)
c)
d)
Answer:
Question: A force F is applied onto a square plate of side L. If the percentage error in determining L is 2% and that in F is 4%, the permissible percentage error in determining the pressure is
a) 8%
b) 6%
c) 4%
d) 2%
Answer: 8%
Question: Assertion: In the measurement of physical quantities direct and indirect methods are used.
Reason : The accuracy and precision of measuring instruments along with errors in measurements should be taken into account, while expressing the result.
a) Assertion is correct, reason is correct; reason is a correct explanation for assertion.
b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
c) Assertion is correct, reason is incorrect
d) Assertion is incorrect, reason is correct
Answer: Assertion is correct, reason is correct; reason is a correct explanation for assertion.
Question:
a) 1.5%
b) 0.15%
c) 10 %
d) 2. 4 %
Answer: 1.5%
Question: In the formula X = 3 YZ2, X and Z have dimensions of capacitance and magnetic induction respectively. The dimensions of Y in MKS system are :
a)
b)
c)
d)
Answer:
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) 0.529 cm
b) 0.053 cm
c) 0.525 cm
d) 0.521 cm
Answer: 0.529 cm
Question:
a)
b)
c)
d) v
Answer:
Question: The density of a material in the shape of a cube is determined by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively 1.5% and 1%, the maximum error in determining the density is:
a) 4.5%
b) 6%
c) 3.5%
d) 2.5%
Answer: 4.5%
Question: If C, the velocity of light, g the acceleration due to gravity and P the atmospheric pressure be the fundamental quantities in MKS system, then the dimensions of length will be same as that of
a)
b)
c)
d) PCg
Answer:
Question:
a) H
b)
c)
d) Wb
Answer: H
Question:
a) 0.961
b) 0.123
c) 0.921
d) 0.913
Answer: 0.961
Question:
a)
b)
c)
d)
Answer:
Question:
a) Linear momentum
b) Torque
c) Force
d) Angular momentum
Answer: Linear momentum
Question:
a)
b)
c)
d)
Answer:
Question:
a)
b)
c)
d)
Answer:
Question:
a)
b)
c) 2xR
d) Rx2
Answer:
Question: The moment of inertia of a body rotating about a given axis is 6.0 kg m2 in the SI system. What is the value of the moment of inertia in a system of units in which the unit of length is 5 cm and the unit of mass is 10 g?
a) 2.4 × 105
b) 6.0 × 103
c) 6.0 × 105
d) 2.4 × 103
Answer: 2.4 × 105
Question:
a)
b)
c)
d)
Answer:
Question:
a)
b)
c)
d) None of these
Answer:
Question:
a) – 4%
b) – 2%
c) –1%
d) –5%
Answer: – 4%
Question:
a)
b)
c)
d)
Answer:
Question:
a) 5%
b) 4.5%
c) 8%
d) 7.75%
Answer: 5%
Question:
a) 0.46 s–1
b) 0.12 s–1
c) 0.78 s–1
d) 0.92 s–1
Answer: 0.46 s–1
Question:
a)
b)
c)
d)
Answer:
Question: In an experiment to determine the inertial mass of an object using Newton’s second law, following graph is obtained between net force on the object and the acceleration produced in it. The mass of the object within error limits is
a) (1.0 ± 0.1) kg
b) (1.0 ± 0.2) kg
c) 1 kg
d) 1.0 kg
Answer: (1.0 ± 0.1) kg
Question: The relative uncertainty in the period of a satellite orbiting around the earth is 10–2. If the relative uncertainty in the radius of the orbit is negligible, the relative uncertainty in the mass of the earth is
a) 2 × 10–2
b) 6 × 10–2
c) 10–2
d) 3× 10–2
Answer: 2 × 10–2
Question:
a) 6.5%
b) 7.5%
c) 6.0%
d) 8.5%
Answer: 6.5%
Question: The accompanying diagram represents a screw gauge. The circular scale is divided into 50 divisions and the linear scale is divided into millimeters. If the screw advances by 1 mm when the circular scale makes 2 complete revolutions, the least count of the instrument and the reding of the instrument in figure are respectively
a) 0.01 mm and 3.82 mm
b) 0.11 mm and 4.57 mm
c) 0.02 mm and 3.70 mm
d) 1.0 mm and 5.37 mm
Answer: 0.01 mm and 3.82 mm
Question: The characteristic distance at which quantum gravitational effects are significant, the Planck length, can be determined from a suitable combination of the fundamental physical constants G, h and c . Which of the following correctly gives the Planck length?
a)
b)
c)
d)
Answer:
Question: The _____ is a measure of how closed the measured value is to the true value of quantity.
a) accuracy
b) Precision
c) Both
d) None of these
Answer: accuracy
Question: The smallest value that can be measured by the measuring instrument is called
a) least count
b) parallax
c) Both
d) None of these
Answer: least count
Question: The ratio of the dimensions of Planck’s constant and that of the moment of inertia is the dimensions of
a) None of these
b) time
c) angular momentum
d) velocity
Answer: None of these
Question: The dimensions of pressure is equal to
a) energy per unit volume
b) energy
c) None of these
d) force per unit volume
Answer: energy per unit volume
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MCQs for Physics NEET Full Syllabus Units and Measurement
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Units and Measurement MCQs Physics NEET Full Syllabus
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Units and Measurement NEET Full Syllabus MCQs Physics
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NEET MCQs Physics Full Syllabus Units and Measurement
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