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2021-05-11 21:53:40
00:24:10
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conceptual questions of dawn of modern physics part 3 conceptual questions for class 12 Physics Federal board Physics exercise of chapter 18 short questions of chapter 18 FSC physics book 2 physics lectures in Urdu physics lectures in Hindi kpk board Physics Federal board Physics physics lectures candle academy Pakistan
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conceptual questions of dawn of modern physics part 3 @ candler Cadbury Pakistan.
ise lecture 19 of chapter 18 dawn of modern physics for class 12 Federal board and kpk board.
in this lecture conceptual questions 18.9, 18.10, 18.11 and 18.12 solved.
Conceptual question 18.9
Use photon model to explain why ultraviolet radiations is harmful to your skin while visible light is not.
Conceptual question 18.10
Explain why the annihilation of an electron and positron creates two photons rather than a single photon?
Conceptual question 18.11
When a particles kinetic energy increases what happens to its de broglie wavelength?
Conceptual question 18.12
Explain why we can experimenty observe the wave like properties of electron but not of billiard ball?
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