What will be the amount of heat in joules required to increase temperature of 120gm of aluminium block from 22° C to 52° C ? (Specific heat of aluminium = 0.21 cal/gm C).
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Answer:
Correct option is
B
129
o
C
Given,
Mass of both copper and aluminum is equal
Equal amount of heat given to both copper and aluminum.
Heat added goes into Internal energy,
Q=m
al
s
al
ΔT=m
c
s
c
ΔT
c
ΔT
c
=
s
cu
s
al
ΔT
al
=
0.093
0.21
×57=128.71
o
C
Hence, change in temperature of copper is 128.71
o
C
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