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11th CBSE
IMPORTANT
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Why do we have different units for same physical quantity?

Important Questions on Units and Measurement

MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>VSA>Q 2.20
The radius of atom is of the order of 1 1 Åand radius of nucleus is of the order of fermi. How many magnitudes higher is the volume of atom as compared to the volume of nucleus?
MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>SA>Q 2.32
Calculate the length of the arc of a circle of radius 31.0 cm which subtends an angle of π6 at the center.
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11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>LA>Q 2.43
How many astronomical units (A.U) make 1 parsec?
 
EASY
11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>MCQ-I>Q 2.1
The number of significant figures in 0.06900 is:
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11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>MCQ-I>Q 2.12
If the momentum (P), area (A) and time (T) are taken to be fundamental quantities, then energy has dimensional formula.
MEDIUM
11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>MCQ-II>Q 2.13
On the basis of dimensions, decide which of the following relations for the displacement of particle undergoing simple harmonic motion is not correct.
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11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>MCQ-II>Q 2.14
P, Q, R are physical quantities, having different dimensions, which of the following combinations can never be a meaningful quantity?
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11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>MCQ-II>Q 2.16
If the Planck's constant (h) and the speed of light in vacuum (c) are taken as two fundamental quantities, which one of the following can, in addition, be taken to express length, mass and time in terms of the three choosen fundamental quantities.