Question 1

Based on the following graph, which metal will emit the highest energy photoelectron when a photon with a frequency of 3.9  F1F1F1S1F1F1F10Hz is incident on the metal? 
A)a
B)b
C)c
D)d

Accepted Answer

The answer of Based on the following graph, which metal...

Question 2

Indicate which metal requires the shortest wavelength photons to eject photoelectrons based on the following graph. 
A)a
B)b
C)c
D)d

Accepted Answer

The answer of Indicate which metal requires the shortest wavelength...

Question 3

What is the energy (E, in J) of a photon from a microwave oven with a frequency of F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 6.0  F1F1F1S1F1F1F10 Hz?
A)3.98  F1F1F1S1F1F1F10J
B)3.98  F1F1F1S1F1F1F10J
C)3.98  F1F1F1S1F1F1F10J
D)3.98  F1F1F1S1F1F1F10J
E)3.98  F1F1F1S1F1F1F10J

Accepted Answer

The answer of What is the energy (E, in J)...

Question 4

Which of the following will lead to an increase in the kinetic energies of photoelectrons emitted when light is incident on a metal surface?
A)decrease in the light's wavelength
B)increase in the light's intensity
C)increase in the light's wavelength
D)decrease in the light's frequency
E)decrease in the light's intensity

Accepted Answer

The kinetic energy of photoelectrons increases with a decrease in the light's wavelength, according to the photoelectric effect, where shorter wavelengths (higher frequency) photons have more energy to impart to the electrons.

Question 5

Which of the following photons has the highest energy?
A)a photon from a lightbulb with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 500 nm
B)a photon from a particle accelerator with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 10 nm
C)a photon emitted from a nuclear reaction with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 425 nm
D)a photon from an N laser with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 337 nm
E)a photon from a KrF eximer laser with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 248 nm

Accepted Answer

The energy of a photon is inversely proportional to its wavelength. Therefore, the photon with the shortest wavelength (10 nm) has the highest energy.

Question 6

If each of the following metals is exposed to light with a wavelength of 240 nm, which will emit photoelectrons with the greatest kinetic energy?
A)iron (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 7.2  F1F1F1S1F1F1F10J)
B)platinum (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 9.1  F1F1F1S1F1F1F10J)
C)nickel (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 8.3  F1F1F1S1F1F1F10J)
D)palladium (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 8.2  F1F1F1S1F1F1F10J)
E)sodium (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 4.4  F1F1F1S1F1F1F10J)

Accepted Answer

The answer of If each of the following metals is...

Question 7

Which of the following metals would be an appropriate choice for the construction of a photon detector for 550 nm light?
A)sodium (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 4.4  F1F1F1S1F1F1F10J)
B)rubidium (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 3.5  F1F1F1S1F1F1F10J)
C)barium (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 4.3  F1F1F1S1F1F1F10J)
D)gold (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 8.2  F1F1F1S1F1F1F10J)
E)platinum (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 9.1  F1F1F1S1F1F1F10J)

Accepted Answer

The answer of Which of the following metals would be...

Question 8

Indicate which of the following sources produces the lowest energy photons.
A)a radio station with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 106.7 MHz
B)a dentist's X-ray source with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 100 pm
C)the laser in a CD player with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 650 nm
D)a microwave oven with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 6.0  F1F1F1S1F1F1F10Hz
E)your cell phone with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 1.750 GHz

Accepted Answer

The answer of Indicate which of the following sources produces...

Question 9

Indicate which of the following sources produces the highest energy photons. A)a radio station with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 106.7 MHz B)a dentist's X-ray source with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 100 pm C)the laser in a CD player with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 650 nm D)a microwave oven with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 6.0 F1F1F1S1F1F1F10 10¹⁰ Hz E)your cell phone with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 1.750 GHz

Accepted Answer

The dentist's X-ray source produces electromagnetic radiation with a wavelength of 100 pm, which corresponds to high-energy photons. Photons with higher frequency (or shorter wavelength) have higher energy, according to the relationship E=hf, where E is energy, h is Planck's constant, and f is frequency. The other sources listed have longer wavelengths (and therefore lower frequencies), and therefore lower energy photons.

Question 10

What is the energy (E, in J) of the photons emitted by an ArF1F1F1S1^F1F1F10 laser with a wavelength of F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 488 nm? A)2.46 F1F1F1S1F1F1F10J B)9.69 F1F1F1S1F1F1F10J C)1.36 F1F1F1S1F1F1F10J D)4.07 F1F1F1S1F1F1F10J E)2.46 F1F1F1S1F1F1F10J

Accepted Answer

The answer of What is the energy (E, in J)...

Question 11

An atom in its ground state absorbs a single photon of light and then relaxes back to the ground state by emitting an infrared photon (1,200 nm) followed by an orange photon (600 nm). What is the wavelength of the photon that was absorbed initially? 
A)600 nm
B)1,200 nm
C)1,800 nm
D)900 nm
E)400 nm

Accepted Answer

The answer of An atom in its ground state absorbs...

Question 12

What is the wavelength of a photon emitted by a KrF1F1F1S1^F1F1F10 laser with an energy of 3.07 J? A)(F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 224 nm) B)(F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 389 nm) C)(F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 417 nm) D)(F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 647 nm) E)(F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 534 nm)

Accepted Answer

The answer of What is the wavelength of a photon...

Question 13

What is the kinetic energy of the photoelectrons emitted from a sodium surface (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 F1F1F1S1F1F1F10J) when it is irradiated by photons with a wavelength of 350 nm? A)2.9 F1F1F1S1F1F1F1010F1F1F1S1^F1F1F10¹⁹ J B)5.7 F1F1F1S1F1F1F1010F1F1F1S1^F1F1F10¹⁹ J C)0 J D)2.8 F1F1F1S1F1F1F1010F1F1F1S1^F1F1F10¹⁹ J E)3.6 F1F1F1S1F1F1F1010F1F1F1S1^F1F1F10¹⁹ J

Accepted Answer

The answer of What is the kinetic energy of the...

Question 14

Which of the following sources produces the highest energy photons?
A)a doctor's X-ray source
B)the heat lamp in your bathroom
C)a microwave oven
D)gamma rays from a star
E)radio waves from your local station

Accepted Answer

Gamma rays from a star produce the highest energy photons. They are the most energetic form of electromagnetic radiation, with wavelengths shorter than X-rays. The other options listed produce lower energy photons in the form of X-rays, infrared radiation, microwaves, and radio waves.

Question 15

What is the photon energy of the yellow-orange light (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 589 nm) produced by sodium vapor streetlights?
A)3.37  F1F1F1S1F1F1F10J
B)6.63  F1F1F1S1F1F1F10J
C)2.99  F1F1F1S1F1F1F10J
D)1.45  F1F1F1S1F1F1F10J
E)7.45  F1F1F1S1F1F1F10J

Accepted Answer

The answer of What is the photon energy of the...

Question 16

What is the minimum frequency of a photon that can eject a photoelectron from Ba metal? (The work function of barium is F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 4.3 F1F1F1S1F1F1F10J.) A)2.8 F1F1F1S1F1F1F10Hz B)6.5 F1F1F1S1F1F1F10Hz C)6.5 F1F1F1S1F1F1F10Hz D)6.5 F1F1F1S1F1F1F10Hz E)2.8 F1F1F1S1F1F1F10Hz

Accepted Answer

The answer of What is the minimum frequency of a...

Question 17

Indicate which of the following photons can cause emission of photoelectrons from a surface of gallium (F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 6.7  F1F1F1S1F1F1F10J).
A)350 nm
B)400 nm
C)200 nm
D)650 nm
E)500 nm

Accepted Answer

The energy of a photon is given by E=hc/λ, where h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon. The energy required to eject a photoelectron from a metal surface (i.e. the work function) depends on the metal. For gallium, the work function is about 4.06 eV (~200 nm). 
Thus, the photons with the shortest wavelengths (i.e. highest energy) are able to cause emission of photoelectrons from gallium. 200 nm is the shortest wavelength in the given options which falls within the range of work function of gallium.

Question 18

Which of the following sources produces the lowest energy photons?
A)a dentist's X-ray source
B)the UV lamp at a tanning bed
C)radio waves from an MRI imager
D)gamma rays from a supernova
E)microwave radiation from a radiotelescope

Accepted Answer

Radio waves have the lowest energy photons among the options provided. X-rays, UV rays, gamma rays, and even microwaves have higher energy photons than radio waves.

Question 19

Electromagnetic radiation with a frequency of 8.6  F1F1F1S1F1F1F10Hz incident on an unknown metal surface causes ejection of photoelectrons with kinetic energies of 1.3  F1F1F1S1F1F1F10J. What is the unknown metal?
A)rubidium (F1F1F1S1F1F1F10  F1F1F1S1F1F1F103.5  F1F1F1S1F1F1F10J)
B)gold (F1F1F1S1F1F1F10  F1F1F1S1F1F1F108.2  F1F1F1S1F1F1F10J)
C)nickel (F1F1F1S1F1F1F10  F1F1F1S1F1F1F108.3  F1F1F1S1F1F1F10J)
D)sodium (F1F1F1S1F1F1F10  F1F1F1S1F1F1F104.4  F1F1F1S1F1F1F10J)
E)platinum (F1F1F1S1F1F1F10  F1F1F1S1F1F1F109.1  F1F1F1S1F1F1F10J)

Accepted Answer

The answer of Electromagnetic radiation with a frequency of 8.6...

Question 20

The work function of sodium is F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 2.9 F1F1F1S1F1F1F10 10F1F1F1S1^F1F1F10¹⁹ J. What is the maximum wavelength that can cause ejection of photoelectrons from a sodium surface? A)151 nm B)222 nm C)45.1 nm D)451 nm E)685 nm

Accepted Answer

The answer of The work function of sodium is F1F1F1S1F1F1F10...

Quiz 7: A Quantum Model of Atoms: Waves and Particles

Based on the following graph, which metal will emit the highest energy photoelectron when a photon with a frequency of 3.9 Hz is incident on the metal?

Indicate which metal requires the shortest wavelength photons to eject photoelectrons based on the following graph.

What is the energy (E, in J) of a photon from a microwave oven with a frequency of   6.0 Hz?

Which of the following will lead to an increase in the kinetic energies of photoelectrons emitted when light is incident on a metal surface?

Which of the following photons has the highest energy?

If each of the following metals is exposed to light with a wavelength of 240 nm, which will emit photoelectrons with the greatest kinetic energy?

Which of the following metals would be an appropriate choice for the construction of a photon detector for 550 nm light?

Indicate which of the following sources produces the lowest energy photons.

Indicate which of the following sources produces the highest energy photons.

What is the energy (E, in J) of the photons emitted by an Ar^ laser with a wavelength of   488 nm?

An atom in its ground state absorbs a single photon of light and then relaxes back to the ground state by emitting an infrared photon (1,200 nm) followed by an orange photon (600 nm) . What is the wavelength of the photon that was absorbed initially?

What is the wavelength of a photon emitted by a Kr^ laser with an energy of 3.07 J?

What is the kinetic energy of the photoelectrons emitted from a sodium surface (  J) when it is irradiated by photons with a wavelength of 350 nm?

Which of the following sources produces the highest energy photons?

What is the photon energy of the yellow-orange light (  589 nm) produced by sodium vapor streetlights?

What is the minimum frequency of a photon that can eject a photoelectron from Ba metal? (The work function of barium is   4.3 J.)

Indicate which of the following photons can cause emission of photoelectrons from a surface of gallium (  6.7 J) .

Which of the following sources produces the lowest energy photons?

Electromagnetic radiation with a frequency of 8.6 Hz incident on an unknown metal surface causes ejection of photoelectrons with kinetic energies of 1.3 J. What is the unknown metal?

The work function of sodium is   2.9  10^¹⁹ J. What is the maximum wavelength that can cause ejection of photoelectrons from a sodium surface?