Physics Concepts and Calculations Quiz

The formula is $P_{max} = V_z imes I_z$, where $V_z$ is the Zener voltage and $I_z$ is the Zener current.

The minimum pressure is approximately $0.5 ext{ N/cm}^2$.

Magnetic lines of force are imaginary lines that represent the strength and direction of a magnetic field.

<p>The de-Broglie wavelength is approximately $0.012 ext{ nm}$.</p> Signup and view all the answers

<p>A thermodynamic process is a transformation that occurs between different states of a system involving heat and work.</p> Signup and view all the answers

<p>The magnetic field $B = \frac{\mu_0 N I}{2R}$ at the center of the coil.</p> Signup and view all the answers

<p>It is recommended to achieve maximum sensitivity and accuracy in measuring resistance.</p> Signup and view all the answers

<p>Binding energy is the energy required to separate particles that are bound together in a nucleus or molecule.</p> Signup and view all the answers

<p>The coefficient of absorption quantifies how much energy from a wave is absorbed by a medium per unit distance.</p> Signup and view all the answers

<p>The maximum relative permeability is calculated to be 1.26.</p> Signup and view all the answers

<p>Mayer's relation states that the molar specific heat at constant pressure is greater than that at constant volume by the amount of the gas constant.</p> Signup and view all the answers

<p>The minimum Zener current is 0.1 A.</p> Signup and view all the answers

<p>Electrostatic potential energy is the work done to assemble a system of point charges from infinity to their positions.</p> Signup and view all the answers

<p>Advantages of solar cells include renewable energy production and low environmental impact.</p> Signup and view all the answers

<p>Surface tension is the property of a liquid's surface that makes it behave like a stretched elastic membrane; its SI unit is Newton per meter (N/m).</p> Signup and view all the answers

<p>Bodies do not cool to 0 K because they can always absorb thermal energy from their surroundings.</p> Signup and view all the answers

<p>The bridge should be placed at a point where the lengths of the two segments are in the ratio of 1:4.</p> Signup and view all the answers

<p>The current amplification factor is 0.98.</p> Signup and view all the answers

<p>The refractive index is the ratio of the speed of light in vacuum to that in a medium. The value of the refractive index of vacuum is 1.</p> Signup and view all the answers

<p>In series, $L_{total} = L_1 + L_2 + ... + L_n$; in parallel, $\frac{1}{L_{total}} = \frac{1}{L_1} + \frac{1}{L_2} + ... + \frac{1}{L_n}$.</p> Signup and view all the answers

<p>Constructive interference occurs when the phase difference is $0, 2\pi, ...$, while destructive interference occurs at phase differences of $\pi, 3\pi, ...$.</p> Signup and view all the answers

<p>The magnitude is $\approx 1.2 \times 10^{-5} T$ directed in a circular pattern around the wire, following the right-hand rule.</p> Signup and view all the answers

<p>The threshold frequency is the minimum frequency of light required to eject electrons from a material's surface. According to Einstein's photoelectric equation, if the photon energy is less than the work function, no electrons are emitted.</p> Signup and view all the answers

<p>The Geiger-Marsden experiment involved firing alpha particles at a thin gold foil. It observed that most alpha particles passed through, while a small fraction was deflected at large angles, suggesting a dense nucleus.</p> Signup and view all the answers