Physics Ray Optics Level: High School
Refraction
In the figure which is shown at “click here” , a ray of light enters the liquid from air and is bent toward the normal as shown . What is the index of refraction n for the liquid ?
Physics Ray Optics Level: High School
Reflection
A ray of light strikes a mirror at an angle of 32 degree normal . What is the angle between the incident ray and the reflected ray ? Answer in units of degree .
Physics Ray Optics Level: High School
Snell’s Law
2-a) The speed of light in a clear plastic is 1.90 x 10^5 m/s . Calculate the index of refraction for the plastic .
2-b) A ray of light enters the plastic at an angle of 22 degrees . At what angle is the light refracted ?
Physics Ray Optics Level: High School
Snell’s Law
Find the speed of light in water and in a diamond .
Physics Ray Optics Level: High School
Combination of Lenses
Two converging lenses , each of focal length 15.0 cm, are placed 40.0 cm apart and an object is placed 30.0 cm in front of the first lens .Where is the final image formed and what is the magnification of the system ?
Physics Ray Optics Level: High School
Total Internal Reflection
The light beam in the figure which is shown at ‘click here’ strikes surface 2 at the critical angle . Determine the angle of incidence , theta i .
Physics Ray Optics Level: High School
Correction of Vision in Human eye
A certain child’s near point is 10.0 cm ; her far point (with eyes relaxed ) is 125 cm . Each eye lens is 2.00 cm from the retina .a) Between what limits , measured in diopters, does the power of this lens-cornea combination vary ?
b) Calculate the power of the eyeglass lens the child use for relaxed distance vision . Is the lens converging or diverging ?
Physics Ray Optics Level: High School
Microscope
The length of a microscope tube is 15.0 c . The focal length of the objective is 1.00 cm and the focal length of the eyepiece is 2.50 cm. What is the magnification of the microscope assuming it is adjusted so that the eye is relaxed ?
Physics Ray Optics Level: High School
Snell’s Law
Light falls at an angle of incidence of 45 degree and follows Snell’s law long the ADB path , Find the distance and time travel for each of the 3 paths : AB, ACB,ADB .
Physics Ray Optics Level: High School
Interference and Coherent sources
Which one of the following statements best explains why interference patterns are not usually observed for light from two ordinary light bulbs ?a) Diffraction effects predominate .
b) The two sources are out of phase .
c) The two sources are not coherent .
d) The interference pattern is too small to observe .
e) Light from ordinary light bulbs is not polarized .
Physics Ray Optics Level: High School
Spherical Lens
Which of the following statements is true concerning the focal length of a lens ?a) The focal length is the same for all colors
b) The focal length is different for different colors because of reflection.
c) The focal length is different for different colors because of dispersion .
d) The focal length is different for different for different colors because of polarization.
e) The focal length is different for different colors because of spherical aberration.
Physics Ray Optics Level: High School
The longest “string” (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 400.0 N . It vibrates with a fundamental frequency of 27.5 Hz . What is the total mass of the wire ?
Physics Ray Optics Level: High School
Interference
Two waves with identical frequency but different amplitudes A1 = 4.0 cm and A2 = 3.0 cm, occupy the same region of space (are superimposed).a) At what phase difference does the resulting wave have the largest amplitude ? What is the amplitude of the resulting wave in that case ?
b) At what phase difference does the resulting wave have the smallest amplitude and what is its amplitude ?
Physics Ray Optics Level: High School
Snell’s Law
An S wave crosses the boundary between two different types of rock. The angle of incidence is 21 degree and the angle of refraction is 34 degree. If the speed of the S wave before the boundary is 3.2 m/s, what is the speed past the boundary ?
Physics Ray Optics Level: High School
Light of wavelength 0.514 micro m (in air) enters the water in a swimming pool . The speed of light in water is 0.710 times the speed in air . What is the wavelength of the light in water ?