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3S-1 A line of 3 point sources of light is a distance D from a screen as shown below. three. sources D screen At point P on the screen directly in front of the three sources, the waves from all three sources arrive in phase with each other and the phasor diagram looks like: A₁ A₂ A3 Apet The difference in phase between phasors from adjacent sources is 0°. Also, the difference in phase between Act and A₁ is 0°. (The net amplitude in this case is Anet-3A where 'A' is the amplitude of each

3S-1 A line of 3 point sources of light is a distance D from a screen as shown below. three. sources D screen At point P on the screen directly in front of the three sources, the waves from all three sources arrive in phase with each other and the phasor diagram looks like: A₁ A₂ A3 Apet The difference in phase between phasors from adjacent sources is 0°. Also, the difference in phase between Act and A₁ is 0°. (The net amplitude in this case is Anet-3A where 'A' is the amplitude of each

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3S-1 A line of 3 point sources of light is a distance D from a screen as shown below. three. sources D screen At point P on the screen directly in front of the three sources, the waves from all three sources arrive in phase with each other and the phasor diagram looks like: A₁ A₂ A3 Apet The difference in phase between phasors from adjacent sources is 0°. Also, the difference in phase between Anct and A₁ is 0°. (The net amplitude in this case is Anci-3A where 'A' is the amplitude of each of the 3 individual phasors.) a) Sketch the phasor diagram for the waves arriving at the screen from the three sources at a point on the screen where the difference in phase between phasors from adjacent sources is 45°. Show on your figure an arrow that represents Anet and the angle of Anet from the first phasor. Write the numerical value of 0 on the figure. (You don't need to find Anct in terms of 'A'). b) Repeat step a) for a difference in phase between phasors from adjacent sources of 90°. c) Repeat step a) for a difference in phase between phasors from adjacent sources of 120°. d) Repeat step a) for a difference in phase between phasors from adjacent sources of 180°. e) Repeat step a) for a difference in phase between phasors from adjacent sources of 240°.
Transcribed Image Text:3S-1 A line of 3 point sources of light is a distance D from a screen as shown below. three. sources D screen At point P on the screen directly in front of the three sources, the waves from all three sources arrive in phase with each other and the phasor diagram looks like: A₁ A₂ A3 Apet The difference in phase between phasors from adjacent sources is 0°. Also, the difference in phase between Anct and A₁ is 0°. (The net amplitude in this case is Anci-3A where 'A' is the amplitude of each of the 3 individual phasors.) a) Sketch the phasor diagram for the waves arriving at the screen from the three sources at a point on the screen where the difference in phase between phasors from adjacent sources is 45°. Show on your figure an arrow that represents Anet and the angle of Anet from the first phasor. Write the numerical value of 0 on the figure. (You don't need to find Anct in terms of 'A'). b) Repeat step a) for a difference in phase between phasors from adjacent sources of 90°. c) Repeat step a) for a difference in phase between phasors from adjacent sources of 120°. d) Repeat step a) for a difference in phase between phasors from adjacent sources of 180°. e) Repeat step a) for a difference in phase between phasors from adjacent sources of 240°.
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