Pressure due to Liquid Column Depth Calculation
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Pressure due to Liquid Column Depth Calculation

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Questions and Answers

Which term best describes a heat engine's ability to convert part of the heat supplied into work?

  • Reservoir thermal capacity
  • Thermal efficiency (correct)
  • Heat conversion ratio
  • Thermodynamic effectiveness

    • In linear Simple Harmonic Motion (SHM), where is the restoring force half its maximum value?

  • At twice the amplitude
  • At the equilibrium position (correct)
  • At one-fourth the amplitude
  • At one-third the amplitude

    • What defines wattless current in a circuit?

  • Current exhibiting purely capacitive behavior
  • Current leading to zero power consumption (correct)
  • Current with zero voltage drop
  • Current with no resistance

    • What primarily determines the wavelength of light emitted by an LED?

    <p>Compound semiconductor material used and its composition</p> Signup and view all the answers

    According to Einstein's photoelectric equation, what happens to the maximum kinetic energy of the electron when the photon energy is equal to the photoelectric work function?

    <p>It becomes zero</p> Signup and view all the answers

    How does light interact with matter based on the text?

    <p>As concentrated bundles of energy</p> Signup and view all the answers

    What is the significance of the 'photoelectric work function' mentioned in the text?

    <p>It determines the minimum energy required to free an electron from a metal</p> Signup and view all the answers

    Why do some electrons come out of the metal with maximum kinetic energy, as per the text?

    <p>They have used minimum energy to overcome potential barriers</p> Signup and view all the answers

    In a thermodynamic process where dW is less than 0 and dQ is greater than 0, what can be concluded about the temperature, volume, and pressure?

    <p>The pressure increases</p> Signup and view all the answers

    During a refrigeration cycle, where does the refrigerant reject heat?

    <p>Hot chamber</p> Signup and view all the answers

    If a gas in a closed container was heated with 10 J of energy, causing the lid to rise 2m with a force of 3 N, what is the total change in the energy of the system?

    <p>4 J</p> Signup and view all the answers

    What does the second law of thermodynamics primarily deal with?

    <p>Heat</p> Signup and view all the answers

    In the context of the text, what does the pressure due to the liquid at depth h depend on?

    <p>Density and height</p> Signup and view all the answers

    If the free surface of the liquid is open to the atmosphere, what is the absolute pressure within the liquid at a depth h?

    <p>$p_0 - h\rho g$</p> Signup and view all the answers

    What factor makes the restoring torque in angular SHM directly proportional to the angular displacement?

    <p>Torsion constant</p> Signup and view all the answers

    How would an increase in the torsion constant affect the period of angular SHM?

    <p>Increase the period</p> Signup and view all the answers

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