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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEP
Chapter: Thermal Properties of Matter

Olympiad workbook · NSEP · Thermal Properties of Matter

End A of a uniform thin rod of length 2 L is in boiling water (100^...

End A of a uniform thin rod of length 2 L is in boiling water

\left(100^{{}^{{}^{\circ}}} \mathrm{C}\right)

and end B is in melting ice \left(0^{{}^{{}^{\circ}}} \mathrm{C}\right) . \mathrm{P}

and Q are two points at distance

\frac{\mathrm{L}}{2}

from A and B respectively. A similar bent rod of length

\frac{3 \mathrm{~L}}{2}

of same material and equal cross section is joined to

\operatorname{rod} \mathrm{AB}

between points

P

and

Q as shown in figure. Then End A of a uniform thin rod of length 2 L is in boiling water (100^ ^ ^ C) and end B is in melting ice (0^ ^ ^ C) . P

End A of a uniform thin rod of length 2 L is in boiling water (100^ ^ ^ C) and end B is in melting ice (0^ ^ ^ C) . P

Options

ATemperature at P will increase and that at Q will decrease
BRate of flow of heat will increase by $25 \%$
CRate of flow of heat will decrease by $20 \%$
DRate of heat flow will increase by $37.5 \%$

Correct answer

B. Rate of flow of heat will increase by $25 \%$

Step-by-step solution

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