When the temperature of metal wire is increased from 0°C to 10°C, its length increases by 0.02%. The percentage change in its mass density will be close to:
When the temperature of metal wire is increased from 0°C to 10°C, its length increases by 0.02%. The percentage change in its mass density will be close to:
Option 1 -
0.008
Option 2 -
0.8
Option 3 -
0.06
Option 4 -
2.3
Asked by Shiksha User
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1 Answer
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Correct Option - 3
Detailed Solution:Δl = lαΔT ⇒ Δl/l = αΔT = 0.02%
Δρ = -ργΔT
|Δρ/ρ| = γΔT = 3αΔT = 3 (0.02%) = 0.06%
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