A photon whose wavelength is = 5.0 × 10−11 m is scattered straight backward.What is the wavelength of the scattered wave?

A) 5.0 × 10−11 m B) 4.5 × 10−11 m C) 5.5 × 10−11 m D) 6.0 × 10−11 m E) 6.5 × 10−11 m A) 5.0 × 10−11 m B) 4.5 × 10−11 m C) 5.5 × 10−11 m D) 6.0 × 10−11 m E) 6.5 × 10−11 m C

If the position of an electron (m = 9.11 × 10−31 kg)could be measured to within 10−30 m,the uncertainty in the magnitude of its speed could be as much as

A) 6 × 10−34 m/s. B) 6 × 1025 m/s. C) 6 × 1030 m/s. D) 1031 m/s. E) 1061 m/s. A) 6 × 10−34 m/s. B) 6 × 1025 m/s. C) 6 × 1030 m/s. D) 1031 m/s. E) 1061 m/s.

A neutron has a mass of 1.67 × 10−27 kg.Its de Broglie wavelength is 1.4 × 10−10 m.What temperature would it correspond to if we had a monatomic gas having the same average kinetic energy (in °C)?

A) 273 B) 25 C) 36 D) 309 E) 51 A) 273 B) 25 C) 36 D) 309 E) 51

A helium-neon laser emits red light having a wavelength of 6.4 × 10−7 m and a power of 0.5 mW.How many photons are emitted each second?

A) 6.4 × 1038 B) 1.6 × 1021 C) 3.2 × 1025 D) 2.6 × 1018 E) 1.6 × 1015 A) 6.4 × 1038 B) 1.6 × 1021 C) 3.2 × 1025 D) 2.6 × 1018 E) 1.6 × 1015

A neutron has a mass of 1.67 × 10−27 kg.The de Broglie wavelength is 1.4 × 10−10 m.How fast is the neutron going? (in m/s)

A) 3.4 × 103 B) 2.8 × 103 C) 3.9 × 103 D) 2.6 × 103 E) 1.7 × 103 A) 3.4 × 103 B) 2.8 × 103 C) 3.9 × 103 D) 2.6 × 103 E) 1.7 × 103

Exam 40: Introduction to Quantum Physics

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A baseball (1 kg)has an energy of 100 joules.If its uncertainty in position is 1 m,what is the percentage uncertainty (Δp/p × 100)in the momentum of the baseball?

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A photon whose wavelength is = 5.0 × 10−¹¹ m is scattered straight backward.What is the wavelength of the scattered wave?

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In an experiment different wavelengths of light,all able to eject photoelectrons,shine on a freshly prepared (oxide-free)zinc surface.Which statement is true?

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If the position of an electron (m = 9.11 × 10−³¹ kg)could be measured to within 10−³⁰ m,the uncertainty in the magnitude of its speed could be as much as

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Question 4

Find the uncertainty in the momentum (in kg ⋅ m/s)of an electron if the uncertainty in its position is equal to 3.4 × 10−¹⁰ m,the circumference of the first Bohr orbit.

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Question 5

A photon collides with an electron.After the collision the wavelength of the scattered wave at a scattering angle greater than Is

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Question 6

An electron is accelerated through a potential difference of 25000 V.What is the de Broglie wavelength of the electron (in m)?

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Question 7

What is the maximum kinetic energy (in eV)of a photoelectron emitted from a surface whose work function is 5.0 eV when illuminated by a light whose wavelength is 200 nm?

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Question 8

What is the maximum velocity (in km/s)of a photoelectron emitted from a surface whose work function is 5.0 eV when illuminated by a light whose wavelength is 200 nm?

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Question 9

Suppose we use optical radiation (λ = 500 nm)to determine the position of the electron to within the wavelength of the light.What will be the resulting uncertainty in the electron's velocity?

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Question 10

Film behind a double slit is exposed to light in the following way: First one slit is opened and light is allowed to go through that slit for time Δt.Then it is closed and the other slit is opened and light is allowed to go through that slit for the same time Δt.When the film is developed the pattern will be

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Question 11

A neutron has a mass of 1.67 × 10−²⁷ kg.Its de Broglie wavelength is 1.4 × 10−¹⁰ m.What temperature would it correspond to if we had a monatomic gas having the same average kinetic energy (in °C)?

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Question 12

A helium-neon laser emits red light having a wavelength of 6.4 × 10−⁷ m and a power of 0.5 mW.How many photons are emitted each second?

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Question 13

The threshold wavelength for photoelectric emission of a particular substance is 500 nm.What is the work function (in eV)?

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Question 14

The light intensity incident on a metallic surface with a work function of 3 eV produces photoelectrons with a maximum kinetic energy of 2 eV.The frequency of the light is doubled.Determine the maximum kinetic energy (in eV).

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Question 15

The "seeing ability" or resolution of radiation is determined by its wavelength.If an atom is approximately 10−¹⁰ m in diameter,how fast must an electron travel to have a wavelength smaller than the size of an atom?

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Question 16

On a bright and sunny day,the intensity of solar radiation on the Earth's surface is 1 000 W/m².If the average wavelength of the sunlight is 500 nm,how many photons are incident on a square meter of the Earth's surface per second?

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Question 17

What is the energy in eV of a photon of yellow light? λ = 500 nm.

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Question 18

An electron has been accelerated by a potential difference of 100 V.If its position is known to have an uncertainty of 1 nm,what is the percent uncertainty (Δp/p × 100)of the electron?

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Question 19

A neutron has a mass of 1.67 × 10−²⁷ kg.The de Broglie wavelength is 1.4 × 10−¹⁰ m.How fast is the neutron going? (in m/s)

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Question 20

Showing 1 - 20 of 48

Exam 40: Introduction to Quantum Physics

A baseball (1 kg)has an energy of 100 joules.If its uncertainty in position is 1 m,what is the percentage uncertainty (Δp/p × 100)in the momentum of the baseball?

A photon whose wavelength is = 5.0 × 10−11 m is scattered straight backward.What is the wavelength of the scattered wave?

In an experiment different wavelengths of light,all able to eject photoelectrons,shine on a freshly prepared (oxide-free)zinc surface.Which statement is true?

If the position of an electron (m = 9.11 × 10−31 kg)could be measured to within 10−30 m,the uncertainty in the magnitude of its speed could be as much as

Find the uncertainty in the momentum (in kg ⋅ m/s)of an electron if the uncertainty in its position is equal to 3.4 × 10−10 m,the circumference of the first Bohr orbit.

A photon collides with an electron.After the collision the wavelength of the scattered wave at a scattering angle greater than Is

An electron is accelerated through a potential difference of 25000 V.What is the de Broglie wavelength of the electron (in m)?

What is the maximum kinetic energy (in eV)of a photoelectron emitted from a surface whose work function is 5.0 eV when illuminated by a light whose wavelength is 200 nm?

What is the maximum velocity (in km/s)of a photoelectron emitted from a surface whose work function is 5.0 eV when illuminated by a light whose wavelength is 200 nm?

Suppose we use optical radiation (λ = 500 nm)to determine the position of the electron to within the wavelength of the light.What will be the resulting uncertainty in the electron's velocity?

A neutron has a mass of 1.67 × 10−27 kg.Its de Broglie wavelength is 1.4 × 10−10 m.What temperature would it correspond to if we had a monatomic gas having the same average kinetic energy (in °C)?

A helium-neon laser emits red light having a wavelength of 6.4 × 10−7 m and a power of 0.5 mW.How many photons are emitted each second?

The threshold wavelength for photoelectric emission of a particular substance is 500 nm.What is the work function (in eV)?

The light intensity incident on a metallic surface with a work function of 3 eV produces photoelectrons with a maximum kinetic energy of 2 eV.The frequency of the light is doubled.Determine the maximum kinetic energy (in eV).

The "seeing ability" or resolution of radiation is determined by its wavelength.If an atom is approximately 10−10 m in diameter,how fast must an electron travel to have a wavelength smaller than the size of an atom?

On a bright and sunny day,the intensity of solar radiation on the Earth's surface is 1 000 W/m2.If the average wavelength of the sunlight is 500 nm,how many photons are incident on a square meter of the Earth's surface per second?

What is the energy in eV of a photon of yellow light? λ = 500 nm.

An electron has been accelerated by a potential difference of 100 V.If its position is known to have an uncertainty of 1 nm,what is the percent uncertainty (Δp/p × 100)of the electron?

A neutron has a mass of 1.67 × 10−27 kg.The de Broglie wavelength is 1.4 × 10−10 m.How fast is the neutron going? (in m/s)

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A photon whose wavelength is = 5.0 × 10−¹¹ m is scattered straight backward.What is the wavelength of the scattered wave?

If the position of an electron (m = 9.11 × 10−³¹ kg)could be measured to within 10−³⁰ m,the uncertainty in the magnitude of its speed could be as much as

Find the uncertainty in the momentum (in kg ⋅ m/s)of an electron if the uncertainty in its position is equal to 3.4 × 10−¹⁰ m,the circumference of the first Bohr orbit.

A neutron has a mass of 1.67 × 10−²⁷ kg.Its de Broglie wavelength is 1.4 × 10−¹⁰ m.What temperature would it correspond to if we had a monatomic gas having the same average kinetic energy (in °C)?

A helium-neon laser emits red light having a wavelength of 6.4 × 10−⁷ m and a power of 0.5 mW.How many photons are emitted each second?

The "seeing ability" or resolution of radiation is determined by its wavelength.If an atom is approximately 10−¹⁰ m in diameter,how fast must an electron travel to have a wavelength smaller than the size of an atom?

On a bright and sunny day,the intensity of solar radiation on the Earth's surface is 1 000 W/m².If the average wavelength of the sunlight is 500 nm,how many photons are incident on a square meter of the Earth's surface per second?

A neutron has a mass of 1.67 × 10−²⁷ kg.The de Broglie wavelength is 1.4 × 10−¹⁰ m.How fast is the neutron going? (in m/s)