A blacksmith heated a metal whose cubic expansivity is 3.9 x 10\(^{-6}\)K\(^{-1}\). Calculate the area expansivity.
a
3.9 x 10\(^{-6}\)K\(^{-1}\)
b
2.6 x 10\(^{-6}\)K\(^{-1}\).
c
1.3 x 10\(^{-6}\)K\(^{-1}\).
d
1.6 x 10\(^{-6}\)K\(^{-1}\).
Explanation
Correct Option
bVideo Explanation
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De sage
1 year ago
Y= 1.5B
where Y = cubic expansivity
B is area
3.9 × 10^-6= 1.5 B
B= ( 3.9/1.5)× 10^ -6
B 2.6× 10^ -6
