Blog

In a two-slit experiment, a fifth-order bright fringe is observed at an angle of 3.0°{“version”:”1.1″,”math”:”3.0°”} away from the centerline. If the wavelength of light is 550 nm{“version”:”1.1″,”math”:”550 nm”}, how far apart are the two slits?

Light of wavelength 470 nm{“version”:”1.1″,”math”:”470 nm”} in air enters a material of refractive index 2.16{“version”:”1.1″,”math”:”2.16″}.

SETI, the Search for Extraterrestrial Intelligence, listens to a range of frequencies referred to as the Water Hole. Hydrogen atoms have the lowest frequency within the Water Hole at 1420 MHz. What is the wavelength for this frequency? The speed of light is 3.00 x 108 m/s. M=106

How far does a beam of light travel in 5 s{“version”:”1.1″,”math”:”5 s”}?    (c=3×108 m/s{“version”:”1.1″,”math”:”c=3×108 m/s”})

Diamond has an index of refraction of 2.42. What is its critical angle if it is in air?

Which of the following diagrams does NOT correctly indicate two principal rays and the image of the object for the diverging or converging lens shown? (NOTE: the object is the leftmost arrow in the diagrams)

Two coherent, monochromatic beams of light are traveling through water. One beam goes through an air bubble of width d. If the two beams are combined after the air bubble, what sort of interference would occur? Take nair = 1, nwater = 1.3, and d = 4 μm. The wavelength of the light in air is λair = 480 nm. Assume that the only difference between the two beams is caused by the air bubble.

Bernie is standing 40 cm in front of a concave mirror. If his image is 1.25 times as large as his face and erect, determine the mirror’s radius of curvature?

Imagine that you have a Nikon microscope with the objective and eyepiece focal lengths of 0.29 cm and 3.00 cm, respectively. You are looking at the furry leg of an insect located at 0.30 cm from the objective lens. The near point of the person using the microscope is 25 cm and the far point is at infinity. What is the final overall magnification of the microscope?

In a Physics104 lab in UW-Madison, you are trying to find the wavelength of a monochromatic laser light by shining that to a pair of narrow slits, separated by 1.6  mm. You know that the light waves arrive at the two slits are in phase. If you set the screen 5.0 m from the slits you see a pattern formation with 5 complete bright fringes per centimeter on the screen near the center of the pattern. The wavelength of the light is closes to