Physics Unit I Quiz on X-Rays, Compton Effect, and Impedance

X-rays have high penetrating power.

Compton effect is the increase in wavelength of X-rays when they collide with electrons.

Wien’s displacement law states that the wavelength of the peak intensity of blackbody radiation is inversely proportional to its temperature.

<p>Platinum.</p> Signup and view all the answers

<p>de Broglie hypothesis states that particles, such as electrons, exhibit wave-like properties.</p> Signup and view all the answers

<p>The root mean square (r.m.s.) value of current is the effective value of an alternating current.</p> Signup and view all the answers

<p>Rayleigh-Jean's law describes the spectral radiance of electromagnetic radiation emitted by a black body as a function of wavelength at different temperatures.</p> Signup and view all the answers

<p>Series resonance occurs when the inductive reactance and capacitive reactance in an AC circuit cancel each other out, leading to maximum current flow. The resonant frequency in series resonance is given by $f = \frac{1}{2\pi\sqrt{LC}}$.</p> Signup and view all the answers

<p>In a series LR circuit, the current lags behind the applied voltage due to the inductive nature of the circuit. The phasor diagram shows the current phasor lagging behind the voltage phasor by 90 degrees.</p> Signup and view all the answers

<p>The average value of Alternating current over one complete cycle is zero because the current alternates in direction and spends an equal amount of time above and below the zero line.</p> Signup and view all the answers

<p>The bandwidth is inversely related to the sharpness of a resonance curve. A narrower bandwidth corresponds to a sharper resonance peak.</p> Signup and view all the answers

<p>The peak current is 5 A and the r.m.s current is approximately 3.54 A.</p> Signup and view all the answers