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1.1 Show that in an atom, the photons in a 1240 nm infrared beam possesses energies of 1.00 eV. (5) 1.2 Determine the energy of a photon of blue light of wavelength 450 nm. (6) 2.1 Determine the wavelength of photon emitted when an electron moves from n = 2 orbit to n = 1 orbit in a gold atom. If Z is the atomic number, and for gold Z = 79. Also, by how much energy will the bombarding electrons excite the gold atom to radiate this emission line? (7) 2.2 Determine the energy and frequency of the radiation emitted when an electron falls from n = 4 to n = 2 in a hydrogen atom. [Take m = 9. 1x10⁻³¹kg, εₐ = 8. 85x10⁻¹²C²./Nm ] (6) 3.1 The uncertainty in the velocity V of a moving electron of mass 10⁻⁴⁰ kg is 2 x10⁶m/s. Calculate the uncertainty of the simultaneous measurement of its position X. [Take 6. 63 x10⁻³⁴] (6)

          1.1 Show that in an atom, the photons in a 1240 nm infrared beam possesses energies of 1.00 eV. (5)

1.2 Determine the energy of a photon of blue light of wavelength 450 nm.
(6)

2.1 Determine the wavelength of photon emitted when an electron moves from n = 2 orbit to n = 1 orbit in a gold atom. If Z is the atomic number, and for gold Z = 79. Also, by how much energy will the bombarding electrons excite the gold atom to radiate this emission line? (7)

2.2 Determine the energy and frequency of the radiation emitted when an electron falls from n = 4 to n = 2 in a hydrogen atom. [Take m = 9. 1x10&#8315;&#179;&#185;kg, &#949;&#8336; = 8. 85x10&#8315;&#185;&#178;C&#178;./Nm ] (6)

3.1 The uncertainty in the velocity V of a moving electron of mass 10&#8315;&#8308;&#8304; kg is 2 x10&#8310;m/s. Calculate the uncertainty of the simultaneous measurement of its position X. [Take 6. 63 x10&#8315;&#179;&#8308;] (6)

1.1 Show that in an atom, the photons in a 1240 nm infrared beam possesses energies of 1.00 eV. (5)

1.2 Determine the energy of a photon of blue light of wavelength 450 nm.
(6)

2.1 Determine the wavelength of photon emitted when an electron moves from n = 2 orbit to n = 1 orbit in a gold atom. If Z is the atomic number, and for gold Z = 79. Also, by how much energy will the bombarding electrons excite the gold atom to radiate this emission line? (7)

2.2 Determine the energy and frequency of the radiation emitted when an electron falls from n = 4 to n = 2 in a hydrogen atom. [Take m = 9. 1x10 #8315; #179; #185;kg, #949; #8336; = 8. 85x10 #8315; #185; #178;C #178;./Nm ] (6)

3.1 The uncertainty in the velocity V of a moving electron of mass 10 #8315; #8308; #8304; kg is 2 x10 #8310;m/s. Calculate the uncertainty of the simultaneous measurement of its position X. [Take 6. 63 x10 #8315; #179; #8308;] (6)

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