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Indian Navy AA (Artificer Apprentice) Energy Transfer in Systems — practice questions

Explore 27 free Energy Transfer in Systems questions in Indian Navy AA (Artificer Apprentice) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Energy Transfer in Systems questions and exercises with answers

Showing questions 1–27 of 27.

Work done by a constant force $\vec{F}$ when the body moves through displacement $\vec{s}$ is:Read the answer and worked solution →As per your syllabus, the dimensions of POTENTIAL energy are the same as those of which quantity?Read the answer and worked solution →As per your syllabus, the SI unit of the spring constant k is which?Read the answer and worked solution →As per your syllabus, the unit kilowatt-hour (kWh) measures which physical quantity?Read the answer and worked solution →Order the atomic models in this chapterRead the answer and worked solution →True or false: Rutherford's two difficultiesRead the answer and worked solution →Which model does this belong to?Read the answer and worked solution →Complete Bohr's first postulateRead the answer and worked solution →True or false: line spectraRead the answer and worked solution →Charge and neutralityRead 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 problem Bohr's model was built to solveRead the answer and worked solution →Flip and pair: model with its pictureRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Strength or weakness?Read the answer and worked solution →Complete the size of the nucleusRead the answer and worked solution →Reading the models backRead the answer and worked solution →Bohr's postulatesRead the answer and worked solution →Explained, or left unexplained?Read the answer and worked solution →True or false: the nucleusRead the answer and worked solution →Order the argument: why Rutherford's atom should collapseRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Assertion and reason: modelsRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Flip and pair: problem with the model that solved itRead the answer and worked solution →

Worked practice questions

Work done by a constant force $\vec{F}$ when the body moves through displacement $\vec{s}$ is:

  1. $W = F + s$
  2. $W = F s \cos\theta$
  3. $W = F s \sin\theta$
  4. $W = F / s$
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Correct answer: B. $W = F s \cos\theta$

Work is defined as $W = \vec{F} \cdot \vec{s} = F s \cos\theta$, where $\theta$ is the angle between $\vec{F}$ and $\vec{s}$. Work is maximum ($Fs$) when force and displacement are parallel and zero when they are perpendicular ($\cos 90° = 0$). Negative work happens when force opposes motion (e.g. friction).

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As per your syllabus, the dimensions of POTENTIAL energy are the same as those of which quantity?

  1. Force per unit area
  2. Momentum vector
  3. Power dissipated
  4. Work and kinetic energy
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Correct answer: D. Work and kinetic energy

Your syllabus: V has same dimensions as W and K: [M L² T⁻²]. Unit: joule.

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As per your syllabus, the SI unit of the spring constant k is which?

  1. J m⁻¹
  2. N m
  3. N s
  4. N m⁻¹
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Correct answer: D. N m⁻¹

Your syllabus: F = -kx ⇒ k = F/x has unit N/m. Dimensions [M T⁻²].

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