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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.
Some phenomenon based on scattering: (i) Sky looks blue because of scattering. (ii) At the starting time of sunrise or sunset sun looks reddish. (iii) Danger signals are
A balance trick Get a smooth metre stick and let it rest lightly on your two forefingers. Place your fingers near the ends of the stick and then move them in the direction of t
what are characteristics of simple harmonic motion
A 10.0-kg object is held up by a string that will break when the tension exceeds 1.00 x 10 2 N. At what upward acceleration will the string break?
Write down the Maxwell's equation in differential form for free space.
Time Dilation A description in which the phenomenon of time dilation from the special theory of associtively necessarily follows from the idea in which the speed of light is th
Infra-Red (IR) Detectors: An IR detector has an impedance of Z= (400+j200) ? . During design tests the detector current is measured as 4 µA. What is the output volta
dawda
Explain about the term spatial coherence of Laser. Spatial coherence: This coherence is a measure of the correlation among the phases of a light wave at several points’ tran
Cooling water flows through a jacketed reactor and is controlled by a valve. The cooling water flow rate through the jacket obeys the following relation: where the pres
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