Question

Note: For question numbers 13 and 14 two statements are giver
labelled Assertion (A) and the other labelled Reason (R). Select
the correct answer to these questions from the cod
and (d) as given below :
anation of the
(a) Both (A) and (R) are true and (R) is correct explanation of
assertion.
(b) Both (A) and (R) are true but (R) is not the correct explanation of the
assertion.
(c) (A) is true but (R) is false.
(d) (A) is false but (R) is true.
13. Assertion (A) : Alloys are commonly used in electrical heating devices
like electric iron and heater.
Reason (R) : Resistivity of an alloy is generally higher than that of its
constituent metals but the alloys have low melting points then their
constituent metals.​

Answer 1

Answer:

Explanation:

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Answer 2

Answer:(a)

Explanation:

Since alloys have more resistivity, they can produce more heat as according to Joules law of heating, heat is directly proportional to resistance. More the resistance, more heat