Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: The temperature of the surface of the sun is approximately 6000 K. If we take a big tens and focus the sun rays, we can produce a temperature of 8000 K. Reason: This highest temperature can be produced according to second law of thermodynamics.A) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
B) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
C) If Assertion is true but Reason is false
D) If both Assertion and Reason are false
Correct Answer: D
Solution :
According to second law of thermodynamics, here is a net transfer of heat from a body at power temperature to a body at higher temperature without the aid of an external agent. Since, the given information produces a contradiction in second law of thermodynamics, it is not possible to produce temperature of 8000 K by collecting the sun rays with a lens.
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