MIDTERM 1 REVIEW. WAVES: Given that yellow light is about 600 nm and blue light is 500 nm, Which has...

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MIDTERM 1 REVIEW

Transcript of MIDTERM 1 REVIEW. WAVES: Given that yellow light is about 600 nm and blue light is 500 nm, Which has...

Page 1: MIDTERM 1 REVIEW. WAVES: Given that yellow light is about 600 nm and blue light is 500 nm, Which has the higher frequency? Higher energy?

MIDTERM 1 REVIEW

Page 2: MIDTERM 1 REVIEW. WAVES: Given that yellow light is about 600 nm and blue light is 500 nm, Which has the higher frequency? Higher energy?

WAVES:Given that yellow light is about 600 nm and blue light is 500 nm,

Which has the higher frequency?

Higher energy?

Page 3: MIDTERM 1 REVIEW. WAVES: Given that yellow light is about 600 nm and blue light is 500 nm, Which has the higher frequency? Higher energy?

BLACK BODY RADIATION

Graphical Reasoning/Synthesis questions

Given the graphs: Which would you expect to look “whiter” to the human eye, a lightbulb operating at 3300K or 2700K? Why or why not?

Synthesis: Would a light bulb operating at 5000K (assume it were possible to engineer this) be an efficient light source? Why or why not?

Our sun’s lmax is approximately 500nm. This is squarely in the green region of the electromagnetic spectrum. So is the sun green? Why or why not?

Page 4: MIDTERM 1 REVIEW. WAVES: Given that yellow light is about 600 nm and blue light is 500 nm, Which has the higher frequency? Higher energy?

WAVE INTERFERENCE

The picture below shows water interfering in a way similar to how light interfered in the double slit

experiment.

• Which letter(s) represents the area where the waves are interfering constructively?

• Which letter(s) represents the area where waves are interfering deconstructive?

• If instead of water, this was light, which letter(s) would give rise to a bright spot on the film?

• If instead of water, this was light, which letter(s) would give rise to a dim spot on the film?

Page 5: MIDTERM 1 REVIEW. WAVES: Given that yellow light is about 600 nm and blue light is 500 nm, Which has the higher frequency? Higher energy?

Photoelectric Effect

Which has a greater threshold frequency?

If a laser of sufficient energy to eject electrons from either metal is used. And a pulse with the same number of photons is shown on each metal, which metal will eject more electrons?

If a laser of sufficient energy to eject electrons from either metal is used. And a pulse with the same number of photons is shown on each metal, which metal will eject electrons at a faster velocity?

You are doing an experiment replicating the photoelectric effect on two different metals. One has a work function of 5.90x10-19J, and

one has a work function of 3.00x10-19J.

Page 6: MIDTERM 1 REVIEW. WAVES: Given that yellow light is about 600 nm and blue light is 500 nm, Which has the higher frequency? Higher energy?

Heisenberg Uncertainty Principle

• True or False: The Heisenberg Uncertainty principle does not allow you to know both momentum and position at the same time?

• True or False: The Heisenberg Uncertainty principle is due to error in our measurements?

• True or False: The Heisenberg Uncertainty principle is only true for matter?

Page 7: MIDTERM 1 REVIEW. WAVES: Given that yellow light is about 600 nm and blue light is 500 nm, Which has the higher frequency? Higher energy?

DeBroglie Wavelength• Which has a longer wavelength, a proton or an

electron? (don’t do calculations)

• Can this equation be used to find the wavelength of light? How do you know? Which equations should you use?

• Why don’t we see the wavelength of large objects?


Carve Your Path the High School, College and Career Management System NM Public Education Department NM Higher Education Department NM Department of Workforce.

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1 solutionscolloidssuspensions < 1 nm> 100 nm transparent with Tyndall effect (scattering of light) translucent (cloudy) molecular motionmovement by gravity.

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from the next level ice machine€¦ · from the bulkhead of the ice machine and treating it with a 254 nm wavelength UV light and with a 185 nm deep UV light wavelength light, creating

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