Verified Solution • 2025–26 Session moderate

Q10.11: NCERT Physics - Part 2 THERMAL PROPERTIES OF MATTER 10.11 Solution: The coefficient of volume expansion of glycerine is 49 _ 10__…

The coefficient of volume expansion of glycerine is 49 _ 10__ K__. What is the fractional change in its density for a 30 �C rise in temperature?

Step-by-Step Verified Solution

**Answer:** Fractional change in density = −1.47×10−2-1.47 \times 10^{-2} **Step-by-Step Explanation:** The fractional change in density is related to volume expansion by:
Δρρ=−ΔVV=−γΔT\frac{\Delta \rho}{\rho} = -\frac{\Delta V}{V} = -\gamma \Delta T
Δρρ=−49×10−5×30=−1.47×10−2\frac{\Delta \rho}{\rho} = -49 \times 10^{-5} \times 30 = -1.47 \times 10^{-2}
The negative sign indicates that density decreases. [citation:2]

All Questions in this Chapter

Q10.1 Q10.2 Q10.3 Q10.4 Q10.5 Q10.6 Q10.7 Q10.8 Q10.9 Q10.10 Q10.11 Q10.12 Q10.13 Q10.14 Q10.15 Q10.16 Q10.17 Q10.18 Q10.19 Q10.20

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