EASY
11th CBSE
IMPORTANT
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Which of the following measurement is most precise?

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Important Questions on Units and Measurement

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11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>MCQ-I>Q 2.10
The mean length of an object is 5cm. Which of the following measurement is most accurate?
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11th CBSE
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NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>MCQ-I>Q 2.11
Young's modulus of steel is 1.9×1011N/m2. When expressed in CGS units of dyne/cm2. It will be equal to1N=105 dynes, and 1 m2=104 cm2.
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11th CBSE
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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.
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11th CBSE
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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
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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
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NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>MCQ-II>Q 2.15
Photon is quantum of radiation with energy E=hv, where v is frequency and h is Planck's constant .The dimensions of h are the same as that of:
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11th CBSE
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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.
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11th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 11>Chapter 2 - Units and Measurement>MCQ-II>Q 2.17
Which of the following ratios express pressure?