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1. Electrical energy is converted into mechanical energy by which of the following?
A. MagnetB. TransformerC. MotorD. GeneratorE. Battery
2. A transformer contains 4000 turns on its primary side and 500 turns on the secondary side. If the input voltage is 240 V, calculate the voltage output of the secondary side.
A. 15 VB. 30 VC. 60 VD. 120 VE. 240 V
3. While standing in front of a plane flat mirror and looking at yourself, you raise your right hand. Which is the best description of the image you see?
A. Erect and enlargedB. Erect and reducedC. Erect and reversedD. Inverted and reversedE. Inverted and reduced
4. Which of the following occurs when light passes into a clear glass cube?
A. The light's wavelength changes.B. The light's frequency changes.C. The light's speed changes.D. The light is polarized.E. Both A and C
5. A light ray is moving parallel to the principal axis of a concave mirror, which it strikes. How will the light ray be reflected?
A. Back upon itselfB. Through the focal pointC. Through the radius of curvatureD. Through a point equal to 0.5fE. Through a point equal to 2r
6. The drawing represents the results in a Young's double slit interference pattern experiment.
Which letter represents the wavelength of the light?
A. AB. BC. CD. DE. E
7. The drawing represents the results in a Young's double slit interference pattern experiment.
Which letter represents the zeroth order fringe?
8. The drawing represents the results in a Young's double slit interference pattern experiment.
What does the photoelectric effect demonstrate?
A. The particulate nature of lightB. The wave nature of lightC. The diffuse reflection of lightD. The total internal reflection of lightE. The polarization of light
9. An electric current is applied to a gas discharge tube, causing it to glow. When the discharge is viewed through a spectroscope, which type of spectrum is seen?
A. MonochromaticB. ContinuousC. Line absorptionD. Line spectraE. Polarimeter
10. Einstein based his theory of relativity on the postulate that
A. photoelectrons absorb and emit photons.B. the velocity of light is the same for all observers.C. mass and energy are intra-convertible.D. the universe is an entropic system.E. energy and momentum are conserved.
11. DeBroglie theorized that all moving objects emit waves (matter waves) based on their momentum . Accordingly, as your team's defensive end, it is your job to stop the other team's 250 pound fullback. If you could hear the fullback's matter waves and you listened as the opposing fullback received the ball and accelerated toward you, what sound would you hear?
A. An increase in loudness and an increase in frequencyB. An increase in loudness and a decrease in frequencyC. A decreasing loudness and an increasing frequencyD. A decreasing loudness and a decreasing frequencyE. Just a loud thump! thump! thump!
12. An atom that has lost an electron is considered to be a(n)
A. positron.B. negatron.C. baryon.D. hadron.E. ion.
13. What is the major product of the fission reaction of 235 U? The basic fission reaction is
A. ProtonsB. NeutronsC. RadiationD. HeatE. Light
14. A radioactive isotope of iodine has a halflife of 8 hours and causes a counter to register 180 counts/min. Find the count rate for this sample of iodine two days later.
A. 1.4/minB. 2.8/minC. 5.6/minD. 11.2/minE. 22.4/min
15. The three natural radiations, in order from most penetrating to least penetrating, are
A. alpha, beta, and gamma.B. beta, gamma, and alpha.C. gamma, alpha, and beta.D. gamma, beta, and alpha.E. beta, alpha, and gamma.
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