AIIMS 2019 Chemistry Laws of Thermodynamics MCQ Question
A bulb is emitted electromagnetic radiation of 660 nm wavelength. The Total energy of radiation is The number of emitted photon will be : ()
1
10
100
1000
Correct Answer
Detailed Explanation
In an isolated system, the change in internal energy (ΔU) is zero, indicating that energy is conserved. For a spontaneous reaction, the second law of thermodynamics states that the change in entropy (ΔS) must be greater than zero, reflecting an increase in disorder, while the change in Gibbs free energy (ΔG) must be less than zero, indicating that the reaction can proceed without external energy input. Since option B aligns with these principles, it is correct, while the other options are not applicable as they do not provide relevant information or correct statements regarding thermodynamic principles.
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