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Question

Choose the correct options for the following statements :
A) First law of thermodynamics specifies the conditions under which a body can use its heat energy to produce the work.
B) Second law of thermodynamics states that heat always flows from hot body to cold body by itself.

  1. Both A and B are true
  2. Both A and B are false
  3. A is true but B is false
  4. A is false B is true

A
Both A and B are false
B
A is true but B is false
C
Both A and B are true
D
A is false B is true
Solution
Verified by Toppr

First law of thermodynamics just states that dQ=dW+dU.

It does not tell us whether the process is feasible or not neither does it provide any condition to under which the body uses any energy.
Hence, A is false.

Second law of thermodynamics states that heat always flows from hot body to cold body by itself and for heat to flow from a cold body to hot body, external work should be done.
Thus, B is true.

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Similar Questions
Q1
Choose the correct options for the following statements :
A) First law of thermodynamics specifies the conditions under which a body can use its heat energy to produce the work.
B) Second law of thermodynamics states that heat always flows from hot body to cold body by itself.

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Q2

Heat energy lost by a hot body is equal to heat energy gained by the cold body. Which of the following option/options below is/are associated with the above statement?


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Q3

Heat is a energy which flows from hot body to a cold body.


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Q4
Which of the following statements is/are correct?

1. Heat flows from the cold body to the hot body.
2. Temperature is a measure of hotness or coldness.
3. Thermometer is used to measure temperature.
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Q5
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ΔQ=ΔU+pΔV

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