Biology Forums - Study Force

Light spreads out when it passes through a narrow slit because of interference.
 a. True
  b. False
  Indicate whether the statement is true or false

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[Ques. 2] Liquid crystal displays make use of interference of light.
 a. True
  b. False
  Indicate whether the statement is true or false

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[Ques. 3] You do not see your image when you look at a flat rough aluminum surface because of specular reflection.
 a. True
  b. False
  Indicate whether the statement is true or false

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[Ques. 4] You can see your image in a mirror because of diffuse reflection.
 a. True
  b. False
  Indicate whether the statement is true or false

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[Ques. 5] What is the temperature (to one decimal place and in degrees K) for radiation that has a maximum wavelength ( max) of 3.5  106 m?

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[Ques. 6] A transformer is designed to step down the 120 V line voltage to 9 V. If there are 400 turns on the input coil, how many turns should there be on the output coil?

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[Ques. 7] (a) What is the wavelength of the peak of the blackbody radiation curve for something at 3,000 kelvins (the temperature of the filament of a light bulb)? (b) What type of EM wave is this?

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[Ques. 8] (a) What is the frequency of an EM wave that has a wavelength of 1 millimeter? (b) What type of EM wave is this?

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[Ques. 9] A radio transmitter broadcasts at a frequency of 200,000 Hz. What is the wavelength of the wave?

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[Ques. 10] The auxiliary power unit (APU) on a jetliner is a generator and operates on the principle of __________________
 Fill in the blank(s) with correct word

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Great answer!