Home
Class 12
PHYSICS
Three rods of same material, same area o...

Three rods of same material, same area of cross section but different lengths 10 cm, 20 cm and 30 cm are connected at a point as shown. What is temperature of junction O?

A

`19.2 "^(@)C`

B

`16.4 "^(@)C`

C

`11.5 "^(@)C`

D

`22"^(@)C`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Three rods made of the same materail and having same cross-section area but diferent length 10 cm, 20 cm and 30 cm are joined as shown. The temperature of the junction is

Three rods of same material and of equal cross sectional area and length have been connected together as shown in the figure. The temperature of the junction of the rods approximately is

Three metal rods of same lenghs and same area of cross sections having conductivities 1,2,3, units are connected in series Then their effective conductivity will be .

Five rods of same material and same cross-section are joined as shown. Lengths of rods ab, ad and bc are l, 2l and 3l respectively. Ends a and c are maintained at temperatures 200^(@)C and 0^(@)C respectivelly. If x has the value calculated in the above question. Then temperature of junction b or d is

Five rods of same material and same cross-section are joined as shown. Lengths of rods ab, ad and bc are l, 2l and 3l respectively. Ends a and c are maintained at temperatures 200^(@)C and 0^(@)C respectivelly. For what length x of rod dc there will be no heat flow through rod bd ?

Three rods AB,BC and BD made of the same materical and having the same area of cross section have been joined as shown is the The ends A,C and D are held at temperatures 20^(@)C Cand 80^(@)C respectively If each rod is of same length then find the temperature at the junction B of the three rods .

Two rods of same length and same material having area of cross section A and 4A respectively are joined as shown in the figure. If T_(A) and T_(B) are temperatures of free ends in steady state. The temperature of junction point C is (Assume no heat loss wil take place through lateral surface)

Three thin uniform rods made of same material are joined as shown. Locate c.m .

A metallic prong consists of 4 rods made of the same material, cross-section and same lengths as shown. The three forked ends are kept at 100^(@) C and the handle end is at 0^(@)C . The temperature of the junction is

Three rods of copper, brass and steel are welded together to form a Y -shaped structure. The cross-sectional area of each rod is 4 cm^2 . The end of copper rod is maintained at 100^@C and the ends of the brass and steel rods at 80^@C and 60^@C respectively. Assume that there is no loss of heat from the surfaces of the rods. The lengths of rods are : copper 46 cm, brass 13 cm and steel 12 cm. (a) What is the temperature of the junction point? (b) What is the heat current in the copper rod? K(copper) = 0.92, K (steel) = 0.12 and K(brass) = 0.26 cal//cm-s^@C .