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Assertion (A): The resistance of a copper specimen changes by about 22% when temperature is increased from room temperature to 700°C.
Reason (R): The physical properties of a material are determined mostly by the extent of impurities.
, Options are ⇒ (A) Both A and R are true and R is correct explanation of A, (B) Both A and R are true but R is not correct explanation of A, (C) A is true but R is false, (D) A is false but R is true, (E) , Leave your comments or Download question paper.Assertion (A): The resistance of a copper specimen changes by about 22% when temperature is increased from room temperature to 700°C. Reason (R): The physical properties of a material are determined mostly by the extent of impurities. | |
A. | Both A and R are true and R is correct explanation of A [Wrong Answer] |
B. | Both A and R are true but R is not correct explanation of A [Correct Answer] |
C. | A is true but R is false [Wrong Answer] |
D. | A is false but R is true [Wrong Answer] |