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

Explore 42 free Physics 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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Physics and Measurement questions and exercises with answers

Showing questions 1–30 of 42.

Dimension of universal gravitational constant G:Read the answer and worked solution →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 →True or false: what Aristotle got wrongRead the answer and worked solution →Complete Newton's first lawRead the answer and worked solution →Which law is this?Read the answer and worked solution →MomentumRead the answer and worked solution →True or false: inertia and forceRead 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 →Tap every statement the first law licensesRead the answer and worked solution →Flip and pair: name with contributionRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Order the historical argumentRead 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 →

Worked practice questions

Dimension of universal gravitational constant G:

  1. M⁻¹L³T⁻² (from F = Gm₁m₂/r²)
  2. Dimensionless
  3. MLT⁻²
  4. ML²T⁻²
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Correct answer: A. M⁻¹L³T⁻² (from F = Gm₁m₂/r²)

F = Gm₁m₂/r². G = Fr²/m₁m₂. [G] = MLT⁻² × L² / M² = M⁻¹L³T⁻². **SI:** N m²/kg² = 6.67 × 10⁻¹¹.

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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
Show answer and solution

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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