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Byju's Answer

Standard VII

Physics

Conduction

Five rods of ...

Question

Five rods of same dimensions are arranged as shown in the fig..They have thermal conductivities, $k_{1}$ , $k_{2}$ , $k_{5}$ , $k_{4}$ , and $k_{3}$ , when points A and B are maintained at different temperatures. No heat flows through the central rod if :

k_{1}

k_{4}

k_{2}

k_{3}

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k_{1}

k_{4}

and

k_{2}

k_{3}

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\frac{k_{1}}{k_{4}} = \frac{k_{2}}{k_{3}}

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k_{1}

k_{2}

k_{3}

k_{4}

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Solution

The correct option is C $k_{1}$ $k_{4}$ = $k_{2}$ $k_{3}$
Case of wheat stone bridge (no heat flow through center rod)
Condition requires $\Rightarrow k_{1} k_{4} = k_{2} k_{3}$

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Similar questions

Five rods of same dimensions are arranged as shown in the figure. They have thermal conductivities $K_{1}, K_{2}, K_{3}, K_{4} a n d K_{5}$ . When points A and B are maintained at different temperatures, no heat flows through the central rod if

N_{2} + O_{2} ⇌ 2 N O, K_{1}

;

(\frac{1}{2}) N_{2} + (\frac{1}{2}) O_{2} ⇌ N O, K_{2}

;

2 N O ⇌ N_{2} + O_{2}; K_{3}

;

N O ⇌ (\frac{1}{2}) N_{2} + (\frac{1}{2}) O_{2}; K_{4}

Correct relation(s) between

K_{1}, K_{2}, K_{3}

, and

K_{4}

is/are :

For these chemical equilibriums:

N_{2} + O_{2} ⇋ 2 N O, K_{1}

\frac{1}{2} N_{2} + \frac{1}{2} O_{2} ⇋ N O, K_{2}

2 N O ⇌ N_{2} + O_{2}; K_{3}

N O ⇌ \frac{1}{2} N_{2} + \frac{1}{2} O_{2}, K_{4}

K_{1} \times K_{3} = x; \sqrt{(K_{1})} \times K_{4} = y; \sqrt{(K_{3})} \times K_{2} = z

What will be the value of

x y z

N_{2} O_{2} ⇌ 2 N O, K_{1}; (\frac{1}{2}) N_{2} + (\frac{1}{2}) O_{2} ⇌ N O, K_{2}

;

2 N O ⇌ N_{2} + O_{2}, K_{3}; N O ⇌ (\frac{1}{2}) N_{2} + (\frac{1}{2}) O_{2}, K_{4}

;
Correct relation (s) between

K_{1}, K_{2}, K_{3}

and

K_{4}

is/are:

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Five rods of same dimensions are arranged as shown in the fig..They have thermal conductivities, k1, k2, k5, k4, and k3, when points A and B are maintained at different temperatures. No heat flows through the central rod if :

The correct option is C k1k4= k2k3Case of wheat stone bridge (no heat flow through center rod)Condition requires ⇒k1k4=k2k3

Five rods of same dimensions are arranged as shown in the fig..They have thermal conductivities, $k_{1}$ , $k_{2}$ , $k_{5}$ , $k_{4}$ , and $k_{3}$ , when points A and B are maintained at different temperatures. No heat flows through the central rod if :

The correct option is C $k_{1}$ $k_{4}$ = $k_{2}$ $k_{3}$
Case of wheat stone bridge (no heat flow through center rod)
Condition requires $\Rightarrow k_{1} k_{4} = k_{2} k_{3}$