Q.

When the temperature of a metal wire is increased from 00C to 100C, its length increased by 0.02%. The percentage change in its mass density will be closest to:

Moderate

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By Expert Faculty of Sri Chaitanya

a

0.06

b

2.3

c

0.008

d

0.8

answer is 1.

(Detailed Solution Below)

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Detailed Solution

ρ=MV​⇒Δρρ=ΔVV​⇒Δρρ=3αΔT​⇒Δρρ=3Δll=0.06%
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