Physics Ray Optics Level: High School
Which of the following has the lowest frequency ?1) red light
2) x-rays
3) gamma rays
4) violet light
5) radio waves
6) microwaves
Physics Ray Optics Level: High School
Which of the following is a typical wavelength for visible light ?1) 1500 nm
2) 500 nm
3) 50 nm
4) 100 nm
5) 1000 nm
Physics Ray Optics Level: High School
Total Internal Reflection
Light traveling from medium 1 undergoes total internal reflection at the boundary to the medium 2 . What can be said about the velocity of light in medium 1 , vi, compared to the velocity of light in medium 2, t>2 ? (c is light velocity in vacuum)1. v1>v%
2. v i = v%
3. vi 4. Cannot be determined . 5. v1>c
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 Modern Physics Level: High School
Heisenberg’s Uncertainty Principle
An electron is located on a pinpoint having a diameter of 3 micro m . The mass of an electron is 9.10939 x 10” kg and the Planck’s constant is 6.62607 x 10 tilde 34 J*s . What is the minimum uncertainty in the speed of the electron ? Answer in units of m/s .
Physics Relativity Level: High School
Time dilation
The star is 50 light years distant from earth . If we traveled on a spacecraft whose speed is 1/10 the speed of light , how long would a round trip to the star and back take ?
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 Electrostatics Level: High School
A large , flat, non conducting sheet with a positive surface charge density (sigma) suspends a small pith ball of mass m, and charge q by a thread as shown in the figure at “click here”.a) If q = 1.00 micro-coulomb , sigma = 10.0 nC/meter-square and m = 0.100 g , Calculate the angle (theta)
b) Calculate the tension in the thread .
