A metal rod is placed between a heat source at 200$^circ$C and a heat sink at 20$^circ$C. During time t, the amount of heat Q is transferred from the source to the sink. If the metal rod is replaced by another made of the same material twice as thick, determine how much heat will be transferred during the same amount of time t.

PHYSICS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A metal rod is placed between a heat source at 200

A	More than Q
B	Less than Q
C	Q
D	Can’t tell

Explanation:

Detailed explanation-1: -This is the transfer of thermal energy across a solid object. If we considered our metal rod while one end was being heated, the thermal energy transferred to this end of the rod would move across this solid object by conduction.

Detailed explanation-2: -Uppercase “Q” generally refers to the total net heat transferred (in terms of the overall area). Lowercase “q” is the specific heat transfer (heat transfer per unit area: W/m^2).

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SSC MTS EXAM

SSC

PHYSICS