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A chemical reaction is known to occur spontaneously under standard conditions. Which of the following statements is/are true (more than one answer may be selected):
A The total entropy (system + surrounding) increases.
B The entropy change of the surroundings is negative.
C The reaction is exothermic.
D The entropy of the system increases.
A) Explain the flow of direct current? ( describe direct current) b) Explain the effect of resistance in circuits? (Describe effect of resistance)
2. Surface Crystallography and Epitaxy Fe thin films are grown on a single-crystal Al (100) substrate surface. The films grow with no dislocations (if they are thin enough) which
1.5 kg of Oxygen (N 2 ) and 0.15 kg of Helium (He 2 ) are separated by a partition in a vessel. The Nitrogen is at 5 bar and 90 o C and the Helium at 1 bar and 20 o C. The part
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When hydrogen atom is excited, it returns to its normal unexcited (or ground state) state by emitting the energy it had absorbed previous. This energy is given out by the atom in t
Q. Derive an expression for the intensity distribution due to Fraunhofer's diffraction at a single slit and shows that the intensity of the first subsidiary maxima is about 4.5 p
Refraction law: For a wavefront travelling by a boundary among two media, the first along a refractive index of n 1 , and the other with one of n, the angle of incidence thet
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can a charge by any means, today, travel from a source to a sink wirelessly? Is there any technology to support it?
Verify Biot-Savart law. Use it to derive an expression for the magnetic field at the centre of a circular loop of radius R carrying a steady current I. Sketch the magnetic field li
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