16 Questions
Which term best describes a heat engine's ability to convert part of the heat supplied into work?
Thermal efficiency
In linear Simple Harmonic Motion (SHM), where is the restoring force half its maximum value?
At the equilibrium position
What defines wattless current in a circuit?
Current leading to zero power consumption
What primarily determines the wavelength of light emitted by an LED?
Compound semiconductor material used and its composition
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?
It becomes zero
How does light interact with matter based on the text?
As concentrated bundles of energy
What is the significance of the 'photoelectric work function' mentioned in the text?
It determines the minimum energy required to free an electron from a metal
Why do some electrons come out of the metal with maximum kinetic energy, as per the text?
They have used minimum energy to overcome potential barriers
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?
The pressure increases
During a refrigeration cycle, where does the refrigerant reject heat?
Hot chamber
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?
4 J
What does the second law of thermodynamics primarily deal with?
Heat
In the context of the text, what does the pressure due to the liquid at depth h depend on?
Density and height
If the free surface of the liquid is open to the atmosphere, what is the absolute pressure within the liquid at a depth h?
$p_0 - h\rho g$
What factor makes the restoring torque in angular SHM directly proportional to the angular displacement?
Torsion constant
How would an increase in the torsion constant affect the period of angular SHM?
Increase the period
Learn how to calculate pressure at a given depth below the surface of a liquid with uniform density. This quiz covers the concept of pressure due to the weight of a liquid column at a certain depth.
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