NIE Physics Rotational Dynamics Quiz
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Questions and Answers

What is the formula for angular velocity in rotational dynamics?

  • 𝜔 = 2𝜋𝑛 (correct)
  • 𝜔 = 𝜃/𝑡
  • 𝜔 = r𝑣
  • 𝜔 = 2𝜋T

Which one of these represents the principle of parallel axes in mechanics?

  • r = I𝛼
  • 𝐼0 = 𝐼𝑐 + Mh^2 + 𝑚𝑔 (correct)
  • 𝐼 = 𝑀𝑟^2
  • L= 𝐼𝜔

In fluid mechanics, what is the formula for pressure inside a soap bubble?

  • p = F/3v
  • p = F/6T (correct)
  • p = F/3T
  • p = F/4T

Which equation represents the ideal gas equation in thermodynamics?

<p>{PV = nRT} (C)</p> Signup and view all the answers

What is the relation between specific heat at constant pressure and specific heat at constant volume in thermodynamics known as?

<p>Cp - Cv = R (D)</p> Signup and view all the answers

How is the kinetic energy of gas molecules per unit mass calculated?

<p>K.𝜖 per unit mass = 3kBT^2 (D)</p> Signup and view all the answers

What is the work done in an Adiabatic process?

<p>W = 𝑛𝑅𝑇 log 𝑒 [T2 – T1] 1−𝛾 (D)</p> Signup and view all the answers

What is the formula for the time period of a simple pendulum?

<p>T = 2𝜋 𝑙 𝑔 (B)</p> Signup and view all the answers

What is the frequency of oscillation for a system with restoring force F = 𝑘𝑥?

<p>n = k/ω (D)</p> Signup and view all the answers

Which equation represents the displacement in angular Simple Harmonic Motion (SHM)?

<p>𝐴 sin 𝜔𝑡 + 𝛼 T (D)</p> Signup and view all the answers

What is true about the composition of two Simple Harmonic Motions (SHM)?

<p>T= 2π𝑚/𝑘 (D)</p> Signup and view all the answers

When does the work done in an Isochoric process equal zero?

<p>When ∆V = 0 (D)</p> Signup and view all the answers

What is the formula to calculate the force on a moving charge in a magnetic field?

<p>$F = qvB$ (B)</p> Signup and view all the answers

What is the expression for the torque on a current-carrying loop placed in a magnetic field?

<p>$r = NIABsin\theta$ (A)</p> Signup and view all the answers

How is the electric intensity defined for a sphere?

<p>$E = \frac{1}{4\pi\epsilon_0} \frac{q}{r^2}$ (B)</p> Signup and view all the answers

What does the Gauss law state?

<p>$\phi = \oint E \cdot dA = \frac{Q_{enc}}{\epsilon_0}$ (A)</p> Signup and view all the answers

What is the formula for potential energy due to an electric dipole in an external field?

<p>$U = PE \cos(\phi_2) - PE \cos(\phi_1)$ (A)</p> Signup and view all the answers

What is the formula for calculating the resistance of a wire?

<p>$R = \frac{\rho L}{A}$ (B)</p> Signup and view all the answers

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