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Author Question: If it takes 50 photons per 0.1 s entering the eye so that the brain senses the light, which of the ... (Read 46 times)

pepyto

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on: Jul 28, 2018
If it takes 50 photons per 0.1 s entering the eye so that the brain senses the light, which of the following colors of light would be delivering the most power to the eye at this minimum perception level?
 a. red
  c. blue
  b. violet
  d. All would be delivering the same power.

Question 2

If the barrier width for an STM is 0.1 nm, what would be the corresponding minimum momentum uncertainty of an electron traversing this boundary?
 a. 1025 kgm/s
  c. 1024 kgm/s
  b. 1023 kgm/s
  d. 1022 kgm/s


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zenzy

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


pepyto

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Reply #2 on: Jul 28, 2018
Thank you!


zenzy

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Reply #3 on: Jul 28, 2018
Always glad to help...


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