Untitled Quiz

A converging lens is thicker in the middle and rays of light that are initially parallel are made to converge. A diverging lens is thinner in the middle and the rays of light are made to diverge.

A virtual image cannot be seen on a screen at the image distance because no light is actually directed to the image position. A real image is formed when light from the object does converge and can be focused on a screen.

The first ray runs parallel to the principal axis, the second ray runs directly through the center of the lens, and the third ray travels through the focal point and then parallel to the principal axis.

<p>The camera is most similar to the eye.</p> Signup and view all the answers

<p>Farsighted people form images behind the retina because their eyeball is too short. Nearsighted people can see nearby objects clearly, but distant objects are focused in front of the retina because their eyeball is too long.</p> Signup and view all the answers

<p>Astigmatism is a defect where the cornea is curved more in one direction than another, resulting in blurred images. It can be corrected with cylindrical corrective lenses.</p> Signup and view all the answers

<p>a) An object must be between the focal point and the lens. b) A diverging lens will never produce a real image.</p> Signup and view all the answers

<p>You could show that it appears on a screen.</p> Signup and view all the answers

<p>Because if you do not put them upside down, the images will be upside down.</p> Signup and view all the answers

<p>There would be no refraction, and therefore no focusing.</p> Signup and view all the answers

<p>a) Waves will spread out more. b) This spreading is called diffraction.</p> Signup and view all the answers

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

<p>Wave interference occurs for waves in general. For example, it causes beat frequencies in sounds and disturbances in ocean waves.</p> Signup and view all the answers

<p>The bright fringes resulted from light waves arriving crest to crest (constructive interference).</p> Signup and view all the answers

<p>A diffraction grating is a multitude of closely spaced parallel slits.</p> Signup and view all the answers

<p>Iridescence is the colors produced by the interference of light waves in thin films.</p> Signup and view all the answers

<p>The soap bubble will appear blue when illuminated by white light.</p> Signup and view all the answers

<p>Light emitted by a common lamp is incoherent, while a laser produces coherent light with the same frequency, phase, and direction.</p> Signup and view all the answers

<p>Radio waves have longer wavelengths, enabling them to diffract around buildings while light waves cannot.</p> Signup and view all the answers

<p>The focal length is 26.7 cm.</p> Signup and view all the answers

<p>Red and blue.</p> Signup and view all the answers

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

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

<p>Bending of a wave around a barrier.</p> Signup and view all the answers

<p>virtual and right-side up.</p> Signup and view all the answers

<p>47⁰.</p> Signup and view all the answers

<p>light fringes indicate constructive interference.</p> Signup and view all the answers

<p>Radio waves = Lowest frequency/longest wavelength Visible light = Medium frequency X-rays = Highest frequency/shortest wavelength</p> Signup and view all the answers

<p>The atomic spectra is unique for each element.</p> Signup and view all the answers

<p>A device used to store charge in a circuit.</p> Signup and view all the answers

<p>A force field that fills the space around every electric charge or group of charges.</p> Signup and view all the answers

<p>Electrical potential energy per coulomb at a location in an electric field; measured in volts.</p> Signup and view all the answers

<p>Energy a charge has due to its location in an electric field.</p> Signup and view all the answers