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Chapter 1 - Electric Current, Ohms Law and Kirchhoffs Laws

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Chapter 2 - Magnetic Effects of Electric Current and Measuring Instruments

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Chapter 3 - Electromagnetic Induction and AC Dynamo and Transformer

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Chapter 4 - Alternating Current AC Circuits

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Chapter 5 - Dual Nature of Wave and Particle

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Chapter 6 - Atomic Spectra and X-Rays

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Chapter 7 - Lasers and Principles

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Chapter 8 - Modern Electronics and Semiconductors

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Lesson 1: Blackbody Radiation, Max Planck Hypothesis and the Photon — Picture questions (exam style)

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  • Questions count: 25
  • Passing grade: 60%
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1.
Source 1: 1 W at 700 nm; source 2: 1 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 1 W at 700 nm; source 2: 1 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 25 : 196, N₁ : N₂ = 196 : 25
E₂ : E₁ = 28 : 5, N₁ : N₂ = 25 : 196
E₂ : E₁ = 196 : 25, N₁ : N₂ = 14 : 10
E₂ : E₁ = 14 : 5, N₁ : N₂ = 14 : 5
2.
Source 1: 2 W at 450 nm; source 2: 1 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 450 nm; source 2: 1 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 9 : 4, N₁ : N₂ = 9 : 2
E₂ : E₁ = 9 : 4, N₁ : N₂ = 2 : 9
E₂ : E₁ = 18 : 4, N₁ : N₂ = 4 : 81
E₂ : E₁ = 18 : 4, N₁ : N₂ = 18 : 2
3.
Source 1: 2 W at 700 nm; source 2: 5 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 700 nm; source 2: 5 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 14 : 2, N₁ : N₂ = 49 : 25
E₂ : E₁ = 2 : 7, N₁ : N₂ = 7 : 25
E₂ : E₁ = 14 : 2, N₁ : N₂ = 5 : 7
E₂ : E₁ = 7 : 2, N₁ : N₂ = 7 : 5
4.
Source 1: 5 W at 450 nm; source 2: 2 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 5 W at 450 nm; source 2: 2 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 9 : 7, N₁ : N₂ = 45 : 196
E₂ : E₁ = 9 : 7, N₁ : N₂ = 45 : 14
E₂ : E₁ = 7 : 9, N₁ : N₂ = 45 : 196
E₂ : E₁ = 7 : 9, N₁ : N₂ = 45 : 14
5.
Source 1: 5 W at 450 nm; source 2: 1 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 5 W at 450 nm; source 2: 1 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 9 : 16, N₁ : N₂ = 45 : 32
E₂ : E₁ = 9 : 16, N₁ : N₂ = 45 : 256
E₂ : E₁ = 9 : 16, N₁ : N₂ = 90 : 16
E₂ : E₁ = 9 : 16, N₁ : N₂ = 45 : 16
6.
Source 1: 2 W at 400 nm; source 2: 2 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 400 nm; source 2: 2 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 8 : 7, N₁ : N₂ = 8 : 7
E₂ : E₁ = 8 : 7, N₁ : N₂ = 8 : 49
E₂ : E₁ = 7 : 8, N₁ : N₂ = 8 : 7
E₂ : E₁ = 8 : 7, N₁ : N₂ = 64 : 49
7.
Source 1: 1 W at 700 nm; source 2: 2 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 1 W at 700 nm; source 2: 2 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 49 : 9, N₁ : N₂ = 36 : 49
E₂ : E₁ = 7 : 3, N₁ : N₂ = 7 : 36
E₂ : E₁ = 49 : 9, N₁ : N₂ = 6 : 7
E₂ : E₁ = 7 : 3, N₁ : N₂ = 7 : 6
8.
Source 1: 5 W at 500 nm; source 2: 5 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 5 W at 500 nm; source 2: 5 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 7 : 10, N₁ : N₂ = 10 : 7
E₂ : E₁ = 49 : 100, N₁ : N₂ = 7 : 10
E₂ : E₁ = 10 : 7, N₁ : N₂ = 10 : 7
E₂ : E₁ = 100 : 49, N₁ : N₂ = 20 : 7
9.
Source 1: 2 W at 600 nm; source 2: 5 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 600 nm; source 2: 5 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 6 : 1, N₁ : N₂ = 12 : 5
E₂ : E₁ = 3 : 1, N₁ : N₂ = 6 : 25
E₂ : E₁ = 3 : 1, N₁ : N₂ = 6 : 5
E₂ : E₁ = 3 : 1, N₁ : N₂ = 5 : 6
10.
Source 1: 2 W at 600 nm; source 2: 2 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 600 nm; source 2: 2 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 3 : 4, N₁ : N₂ = 3 : 4
E₂ : E₁ = 6 : 4, N₁ : N₂ = 16 : 9
E₂ : E₁ = 4 : 3, N₁ : N₂ = 3 : 8
E₂ : E₁ = 3 : 4, N₁ : N₂ = 9 : 16
11.
Source 1: 1 W at 500 nm; source 2: 2 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 1 W at 500 nm; source 2: 2 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 5 : 9, N₁ : N₂ = 10 : 6
E₂ : E₁ = 5 : 3, N₁ : N₂ = 5 : 6
E₂ : E₁ = 25 : 9, N₁ : N₂ = 36 : 25
E₂ : E₁ = 5 : 3, N₁ : N₂ = 5 : 12
12.
Source 1: 2 W at 600 nm; source 2: 1 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 600 nm; source 2: 1 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 12 : 7, N₁ : N₂ = 24 : 7
E₂ : E₁ = 12 : 7, N₁ : N₂ = 24 : 49
E₂ : E₁ = 144 : 49, N₁ : N₂ = 49 : 576
E₂ : E₁ = 7 : 12, N₁ : N₂ = 24 : 7
13.
Source 1: 1 W at 400 nm; source 2: 2 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 1 W at 400 nm; source 2: 2 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 8 : 5, N₁ : N₂ = 16 : 25
E₂ : E₁ = 8 : 5, N₁ : N₂ = 4 : 5
E₂ : E₁ = 8 : 5, N₁ : N₂ = 4 : 25
E₂ : E₁ = 16 : 5, N₁ : N₂ = 5 : 4
14.
Source 1: 2 W at 400 nm; source 2: 1 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 400 nm; source 2: 1 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 1 : 4, N₁ : N₂ = 1 : 4
E₂ : E₁ = 2 : 1, N₁ : N₂ = 16 : 1
E₂ : E₁ = 1 : 2, N₁ : N₂ = 8 : 1
E₂ : E₁ = 2 : 1, N₁ : N₂ = 4 : 1
15.
Source 1: 5 W at 400 nm; source 2: 1 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 5 W at 400 nm; source 2: 1 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 4 : 3, N₁ : N₂ = 20 : 9
E₂ : E₁ = 4 : 3, N₁ : N₂ = 20 : 6
E₂ : E₁ = 8 : 3, N₁ : N₂ = 20 : 6
E₂ : E₁ = 4 : 3, N₁ : N₂ = 20 : 3
16.
Source 1: 5 W at 500 nm; source 2: 2 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 5 W at 500 nm; source 2: 2 W at 200 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 25 : 4, N₁ : N₂ = 25 : 4
E₂ : E₁ = 5 : 2, N₁ : N₂ = 25 : 4
E₂ : E₁ = 5 : 4, N₁ : N₂ = 25 : 8
E₂ : E₁ = 5 : 2, N₁ : N₂ = 16 : 625
17.
Source 1: 5 W at 700 nm; source 2: 2 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 5 W at 700 nm; source 2: 2 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 7 : 8, N₁ : N₂ = 35 : 16
E₂ : E₁ = 64 : 49, N₁ : N₂ = 35 : 16
E₂ : E₁ = 64 : 49, N₁ : N₂ = 1225 : 256
E₂ : E₁ = 14 : 8, N₁ : N₂ = 16 : 35
18.
Source 1: 2 W at 450 nm; source 2: 5 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 450 nm; source 2: 5 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 81 : 25, N₁ : N₂ = 18 : 25
E₂ : E₁ = 9 : 5, N₁ : N₂ = 18 : 25
E₂ : E₁ = 9 : 5, N₁ : N₂ = 324 : 625
E₂ : E₁ = 18 : 5, N₁ : N₂ = 324 : 625
19.
Source 1: 2 W at 450 nm; source 2: 2 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 450 nm; source 2: 2 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 3 : 2, N₁ : N₂ = 3 : 2
E₂ : E₁ = 4 : 9, N₁ : N₂ = 2 : 3
E₂ : E₁ = 3 : 2, N₁ : N₂ = 2 : 3
E₂ : E₁ = 6 : 2, N₁ : N₂ = 9 : 4
20.
Source 1: 2 W at 600 nm; source 2: 5 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 600 nm; source 2: 5 W at 300 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 4 : 1, N₁ : N₂ = 16 : 25
E₂ : E₁ = 1 : 4, N₁ : N₂ = 4 : 25
E₂ : E₁ = 1 : 4, N₁ : N₂ = 4 : 10
E₂ : E₁ = 2 : 1, N₁ : N₂ = 4 : 5
21.
Source 1: 2 W at 600 nm; source 2: 2 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 600 nm; source 2: 2 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 12 : 10, N₁ : N₂ = 12 : 5
E₂ : E₁ = 12 : 5, N₁ : N₂ = 12 : 5
E₂ : E₁ = 25 : 144, N₁ : N₂ = 144 : 25
E₂ : E₁ = 25 : 144, N₁ : N₂ = 12 : 5
22.
Source 1: 2 W at 500 nm; source 2: 1 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 500 nm; source 2: 1 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 25 : 64, N₁ : N₂ = 5 : 4
E₂ : E₁ = 8 : 5, N₁ : N₂ = 5 : 4
E₂ : E₁ = 5 : 64, N₁ : N₂ = 5 : 4
E₂ : E₁ = 5 : 8, N₁ : N₂ = 5 : 4
23.
Source 1: 1 W at 400 nm; source 2: 2 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 1 W at 400 nm; source 2: 2 W at 800 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 1 : 2, N₁ : N₂ = 1 : 4
E₂ : E₁ = 2 : 2, N₁ : N₂ = 1 : 4
E₂ : E₁ = 1 : 2, N₁ : N₂ = 1 : 16
E₂ : E₁ = 4 : 1, N₁ : N₂ = 1 : 4
24.
Source 1: 2 W at 500 nm; source 2: 5 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 500 nm; source 2: 5 W at 250 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 2 : 1, N₁ : N₂ = 4 : 10
E₂ : E₁ = 1 : 4, N₁ : N₂ = 4 : 25
E₂ : E₁ = 1 : 4, N₁ : N₂ = 25 : 16
E₂ : E₁ = 2 : 1, N₁ : N₂ = 4 : 5
25.
Source 1: 2 W at 700 nm; source 2: 2 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
Source 1: 2 W at 700 nm; source 2: 2 W at 350 nm. (E = photon energy, N = photons per second.) Which option is correct?
E₂ : E₁ = 1 : 2, N₁ : N₂ = 2 : 1
E₂ : E₁ = 1 : 4, N₁ : N₂ = 2 : 1
E₂ : E₁ = 2 : 1, N₁ : N₂ = 2 : 1
E₂ : E₁ = 1 : 4, N₁ : N₂ = 2 : 2
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