allO Ph 207 exam 1...Subjet: Ph.207Date: 15.03. 2021First semester 2020-2021Department of PhysicsCollage of ScienceBasranTime: Ninty minutese of ScieQ1: A nuclear bomb at the instant of explosion may be approximated to a blackbody of radius1.3 m with a surface temperature of 10’ K. find the bomb emits power ?Q2: An electron has a de Broglie wavelength of 2.5 pm. Find its kinetic energy and the phaseand group velocities of its de Broglie waves.Q2:- Light from the sun arrives at the earth, an average of 1.48 × 10'' m away, at the rateof 1.4 kW/m² of area perpendicular to the direction of the light. Assume that sunlight ismonochromatic with a frequency of 4.95 × 1014 Hz. (a) How many photons fall persecond on each square meter of the earths surface directly facing the sun? (b) What is thepower output of the sun, and how many photons per second does it emit?Q3:- (a) Find the change in wavelength of 85 pm x-rays that are scattered 115° by a target.(b) Find the angle between the directions of the recoil electron and the incident photon. (c)Find the energy of the recoil electron.[ me=9.1x10-31 kg and h= 6.626 × 10-34 m² kg /s ]LecturerDr. Saeed Jabbar Abbas((ersity a Q1: A nuclear bomb at the instant of explosion may be approximated to a blackbody of radius1.3 m with a surface temperature of 107 K. find the bomb emits power ?Q2: An electron has a de Broglie wavelength of 2.5 pm. Find its kinetic energy and the phaseandgroupvelocities of its de Broglie waves.Q2:- Light from the sun arrives at the earth, an average of 1.48 × 10'" m away, at the rateof 1.4 kW/m² of area perpendicular to the direction of the light. Assume that sunlight ismonochromatic with a frequency of 4.95 x 1014 Hz. (a) How many photons fall persecond on each square meter of the earths surface directly facing the sun? (b) What is thepower output of the sun, and how many photons per second does it emit?Q3:- (a) Find the change in wavelength of 85 pm x-rays that are scattered 115° by a target.(b) Find the angle between the directions of the recoil electron and the incident photon. (c)Find the energy of the recoil electron.[ m=9.1x10-31kg and h= 6.626 × 1034 m² kg / s ]

Question

allO Ph 207 exam 1...Subjet: Ph.207Date: 15.03. 2021First semester 2020-2021Department of PhysicsCollage of ScienceBasranTime: Ninty minutese of ScieQ1: A nuclear bomb at the instant of explosion may be approximated to a blackbody of radius1.3 m with a surface temperature of 10’ K. find the bomb emits power ?Q2: An electron has a de Broglie wavelength of 2.5 pm. Find its kinetic energy and the phaseand group velocities of its de Broglie waves.Q2:- Light from the sun arrives at the earth, an average of 1.48 × 10'' m away, at the rateof 1.4 kW/m² of area perpendicular to the direction of the light. Assume that sunlight ismonochromatic with a frequency of 4.95 × 1014 Hz. (a) How many photons fall persecond on each square meter of the earths surface directly facing the sun? (b) What is thepower output of the sun, and how many photons per second does it emit?Q3:- (a) Find the change in wavelength of 85 pm x-rays that are scattered 115° by a target.(b) Find the angle between the directions of the recoil electron and the incident photon. (c)Find the energy of the recoil electron.[ me=9.1x10-31 kg and h= 6.626 × 10-34 m² kg /s ]LecturerDr. Saeed Jabbar Abbas((ersity a Q1: A nuclear bomb at the instant of explosion may be approximated to a blackbody of radius1.3 m with a surface temperature of 107 K. find the bomb emits power ?Q2: An electron has a de Broglie wavelength of 2.5 pm. Find its kinetic energy and the phaseandgroupvelocities of its de Broglie waves.Q2:- Light from the sun arrives at the earth, an average of 1.48 × 10'&#34; m away, at the rateof 1.4 kW/m² of area perpendicular to the direction of the light. Assume that sunlight ismonochromatic with a frequency of 4.95 x 1014 Hz. (a) How many photons fall persecond on each square meter of the earths surface directly facing the sun? (b) What is thepower output of the sun, and how many photons per second does it emit?Q3:- (a) Find the change in wavelength of 85 pm x-rays that are scattered 115° by a target.(b) Find the angle between the directions of the recoil electron and the incident photon. (c)Find the energy of the recoil electron.[ m=9.1x10-31kg and h= 6.626 × 1034 m² kg / s ]

Accepted Answer

GIven

The radius of the spherical bomb is r=1.3 m.
The surface temperature of the bomb is T=107 K.…

Q1: A nuclear bomb at the instant of explosion may be approximated to a blackbody of radius 1.3 m with a surface temperature of 10' K. find the bomb emits power ?