2 metre long aluminium pipe at 27 degree celsius is heated unit it become 2.0024 m at 77 degree Celsius the coefficient of linear expansion of Aluminium is
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2
Answer:
α
=
2.4×10−6 degC−1
Explanation:
The coefficient of linear expansion is the fractional increase in length for a rise in temperature of 1 degree (deg C or Kelvin).
This means that if the length was doubled with a rise of 1 degree then the coefficient would be 2.
For most materials the numbers are much smaller.
α
=
Δ
L
L
0
×
Δ
T
Δ
T
=
77
−
27
=
50
x
degC
∴
α
=
0.00024
2
×
50
=
2.4
×
10
−
6
x
degC
−1
α
=
2.4×10−6 degC−1
Explanation:
The coefficient of linear expansion is the fractional increase in length for a rise in temperature of 1 degree (deg C or Kelvin).
This means that if the length was doubled with a rise of 1 degree then the coefficient would be 2.
For most materials the numbers are much smaller.
α
=
Δ
L
L
0
×
Δ
T
Δ
T
=
77
−
27
=
50
x
degC
∴
α
=
0.00024
2
×
50
=
2.4
×
10
−
6
x
degC
−1
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