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Indian Navy SSR (Sailor) Units and Measurement — practice questions

Explore 29 free Units and Measurement questions in Indian Navy SSR (Sailor) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Units and Measurement questions and exercises with answers

Showing questions 1–29 of 29.

As per your syllabus, Table 1.1, the SI system has how many BASE quantities and units?Read the answer and worked solution →As per your syllabus, the SI unit of AMOUNT OF SUBSTANCE is the mole, and one mole contains exactly how many entities?Read the answer and worked solution →As per your syllabus, the kilogram is now defined via which fundamental constant?Read the answer and worked solution →As per your syllabus, 1 STANDARD ATMOSPHERIC PRESSURE (atm) equals approximately which value?Read the answer and worked solution →As per your syllabus, Ex 1, the area of a rectangle 16.2 cm × 10.1 cm with each ±0.1 cm uncertainty is approximately which?Read the answer and worked solution →Match the quantity to its dimensional formulaRead the answer and worked solution →Tap every SI base quantityRead the answer and worked solution →Match each base quantity to its SI unitRead the answer and worked solution →Base unit or derived unit?Read the answer and worked solution →Complete the structure of a unit systemRead the answer and worked solution →True or false: the SI systemRead the answer and worked solution →Naming the unitsRead the answer and worked solution →True or false: measurement in physicsRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Flip and pair: quantity with unitRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Base or derived, in practiceRead the answer and worked solution →Which base quantity does this unit measure?Read the answer and worked solution →True or false: standardised unitsRead the answer and worked solution →Tap every derived unit with a special nameRead the answer and worked solution →Complete the idea of a system of unitsRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Assertion and reason: unitsRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Flip and pair: derived unit with what it measuresRead the answer and worked solution →Order the steps: build a derived unitRead the answer and worked solution →Counting the base unitsRead the answer and worked solution →

Worked practice questions

As per your syllabus, Table 1.1, the SI system has how many BASE quantities and units?

  1. 7
  2. 8
  3. 6
  4. 5
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Correct answer: A. 7

syllabus Table 1.1: 7 SI base units = m, kg, s, A, K, mol, cd. Plus 2 supplementary (rad + sr) that are dimensionless.

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As per your syllabus, the SI unit of AMOUNT OF SUBSTANCE is the mole, and one mole contains exactly how many entities?

  1. 6.62607015 × 10⁻³⁴
  2. 9.10938 × 10⁻³¹
  3. 1.380649 × 10⁻²³
  4. 6.02214076 × 10²³
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Correct answer: D. 6.02214076 × 10²³

syllabus Table 1.1 (mole definition): Avogadro number = exactly 6.02214076 × 10²³ entities (since 2019 SI revision).

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As per your syllabus, the kilogram is now defined via which fundamental constant?

  1. Avogadro number N_A
  2. Boltzmann constant k
  3. Planck constant h
  4. Caesium frequency Δν_Cs
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Correct answer: C. Planck constant h

syllabus Table 1.1: kg is defined by fixing h = 6.62607015 × 10⁻³⁴ J s. International prototype no longer used.

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More Physics topics

Physics and MeasurementOpticsCurrent ElectricityRay OpticsRay Optics and Optical InstrumentsElectrostaticsGravitationRay and Wave Optics