MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Introduction

A metallic ro...

Question

A metallic rod is connected between two bodies at temperature $T_{h}$ and $T_{c} (T_{h} > T_{c})$ . $P, Q$ and $R$ are the points on the metallic rod along the length (point $P$ being closer to body at temperature $T_{h}$ ) where temperature readings are noted as $T_{1}, T_{2}$ and $T_{3}$ respectively when the rod has reached steady state. Find the correct option.

A

T_{1} > T_{2} < T_{3}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

T_{1} > T_{2} > T_{3}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

T_{1} < T_{2} < T_{3}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

T_{1} < T_{2} > T_{3}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $T_{1} > T_{2} > T_{3}$

As $x$ increases, temperature decreases due to energy transfer from hot body to cold body.
Since, $P$ is closer to hot body, $T_{1}$ is greater than $T_{2}$ and $T_{3}$ and $R$ being closer to cold body, so $T_{3}$ is less than $T_{2}$ and $T_{1}$ .
$∴$ We can conclude that $T_{1} > T_{2} > T_{3}$

Suggest Corrections

thumbs-up

0

Similar questions

Q. A metallic rod is connected between two bodies at temperature

T_{h}

T_{c} (T_{h} > T_{c})

P, Q

R

are the points on the metallic rod along the length (point

P

being closer to body at temperature

T_{h}

) where temperature readings are noted as

T_{1}, T_{2}

T_{3}

respectively when the rod has reached steady state. Find the correct option.

Q. In steady state condition, the temperature of two ends of a metallic rod of length

25 c m

0^{\circ} C

100^{\circ} C

. The temperature at a point

8 c m

from the hot end is:

Q. Four identical rods

A B, C D, C F

D E

are connected as shown in figure. The length, cross-sectional area and thermal conductivity of each rod are

L, A, K

respectively. The ends

A, E, F

are maintained at temperature

T_{1}, T_{2}

T_{3}

respectively. Assuming no loss of heat to the atmosphere, calculate the temperature at

B [C B = B D]

T_{3}

as higher temperature)

P

Q

have equal lengths. Their thermal conductivities are

K_{1}

K_{2}

and cross-sectional areas are

A_{1}

A_{2}

. When the temperature at ends of each rod are

T_{1}

T_{2}

respectively, the rate of flow of heat through

P

Q

will be equal, if

Q. A rod of length

l

and cross section area A has a variable thermal conductivity given by

k = α T

α

is a positive constant and

T

is temperature in Kelvin. Two ends of the rod are maintained at temperature

T_{1}

T_{2}

(T_{1} > T_{2})

. Heat current flowing through the rod will be

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Standard XIII Physics

Join BYJU'S Learning Program

CrossIcon