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Standard XII
Physics
Calorimetry
When 300 J of...
Question
When 300 J of heat is added to 25 g of sample of a material, its temperatures rises from
25
∘
C
to
45
∘
C
. Calculate its thermal capacity.
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Solution
Heat
Q
=
m
S
Δ
T
where
S
=
specific heat of the material.
So,
300
=
(
25
/
1000
)
S
(
45
−
25
)
or
S
=
600
J
/
k
g
o
C
Thermal capacity,
c
=
m
S
=
(
25
/
1000
)
(
600
)
=
15
J
/
o
C
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Q.
When 300 J of heat is added to 25 gm of sample of a material its temperature rises from
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