Physics Ray Optics Level: High School
ë represents symbol lambda used in the solution.
Assuming that ë is the wave length of light in oil , for an oil film on water , constructive interference occurs with the minimum film thickness of :ë
2ë
ë/4
ë/2
Physics Ray Optics Level: High School
We have seen that two monochromatic light waves can interfere constructively or destructively , depending on their phase difference . One consequence of this phenomena is .The colors you see when white light is reflected from a soap bubble .
The way in which Polaroid sunglasses work .
The formation of an image by a converging lens , such as the lens in your eye .
A rainbow .
The appearance of a mirage in the desert .
Physics Ray Optics Level: High School
If two light waves are coherent , which of the following in NOT necessary ?They must have the same frequency .
They must have the same velocity .
They must have the same amplitude .
They must have the same wavelength .
They must have a constant phase difference at every point in space .
Physics Ray Optics Level: High School
The index of refraction of diamond is 2.42 . This means that a given wavelength of light travels .2.42 times faster in diamond than it does in vacuum .
2.42 times faster in air than it does in diamond .
2.42 times faster in diamond than it does in air .
2.42 times faster in vacuum than it does in diamond .
Physics Ray Optics Level: High School
Consider an oil film (n = 1.50) on water (n = 1.33) and light of wavelength 600 nm in air , incident on the film . The minimum film thickness for constructive interference of the light in air is :100. nm
150. nm
200. nm
113. nm
Physics Ray Optics Level: High School
For a beam of light , the direction of polarization is defined asthe direction of electric field’s vibration .
the direction of the magnetic field’s vibration .
the beam’s direction of travel .
the direction that is mutually perpendicular to the electric magnetic field and magnetic field vectors
Physics Ray Optics Level: High School
A convex lens is placed in a flat glass plate and illuminated from above with monochromatic red light . When viewed from above , concentric bands of red and dark are observed . What does one observe at the exact center of the lens where the lens and the glass plate are in direct contact ?A rainbow of color
A dark spot
A bright red spot
A bight spot that is some color other than red
Physics Ray Optics Level: High School
Diffraction
Consider two diffraction gratings with the same slit separation , the only difference being that one grating has 3 slits and the other 4 slits , If both gratings are illuminated with a beam of the same monochromatic light ,both gratings produce the same separation between orders .
the grating with 4 slits produces the greater separation between orders .
both grating produce the same separation between orders , but the orders are better defined with the 4-slit grating .
the grating with 3 slits produces the greater separation between orders .
Physics Ray Optics Level: High School
Where should an object be placed in front of a convex spherical mirror of 15.5 cm focal length in order to get a virtual image with a magnification of one-half ?
Physics Ray Optics Level: High School
A concave spherical mirror has a , focal length of 15.0cm . Where should an object be placed such that the height of the image is a quarter of the height of the object ?