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प्रश्न
Answer the following question.
Define the term "Intensity" in the photon picture of electromagnetic radiation.
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उत्तर
The intensity I, is defined as the total amount of energy falling on a given surface/Region per unit time 't' and per unit area 'A'.
If the total energy emitted = `nhv`
Then, `I = "nhv"/"At"`.
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संबंधित प्रश्न
Assume that each iron atom has a permanent magnetic moment equal to 2 Bohr magnetons (1 Bohr magneton equals 9.27 × 10−24 A m2). The density of atoms in iron is 8.52 × 1028 atoms m−3. (a) Find the maximum magnetisation I in a long cylinder of iron (b) Find the maximum magnetic field B on the axis inside the cylinder.
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