Home
Class 11
PHYSICS
Two rods (one semi-circular and other st...

Two rods (one semi-circular and other straight) of same material and of same cross-sectional area are joined as shown in the figure. The point A and B are maintained at different temperature. Find the ratio of the heat transferred through a cross-section of a semi-circular rod to the heat transferred through a cross section of the straight rod in a given time.

A

`2 : pi`

B

`1 : 2`

C

`pi : 2`

D

`3 : 2`

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Graphical Questions|17 Videos

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Assertion & Reason|24 Videos

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Radiation (Newton s Law of Cooling)|37 Videos

  • THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY

    ERRORLESS |Exercise Self Evaluation Test|15 Videos

  • UNITS, DIMENSION & MEASUREMENTS

    ERRORLESS |Exercise All Questions|333 Videos

Similar Questions

Explore conceptually related problems

(a) Three rod of lengths 20 cm each and area of cross-section 1 cm^(2) are joined to form a triangle ABC . The conductivities of the rods are K_(AB) = 50 J//m-s-.^(@)C, K_(BC) = 200 J//m-s-.^(@)C and K_(AC) = 400 J//m-s-.^(@)C . The junctions A, B and C are maintained at 40^(@)C , 80^(@)C and 80^(@)C respectively. Find the rate of heat flowing through the rods AB, AC and BC . (b) A semicircular rod is joineted as its end to a straight rod of the same material and the same cross-sectional area. The straight rod forms a diameter of the other rod. The junctions are maintained at different temperatures. Find the ratio of the heat transferred through a cross-section of the simicircular rod to the heat transferred through a cross-section of the straight rod in a given time.

A semicircular rods is joined at its end to a straight rod of the same material and the same cross-sectional area. The straight rod formss a diameter of the other rod. The junction are maintaine dat different temperature. Find the ratio of the heat transffered through a cross section of the straigh rod in a given time.

Knowledge Check

  • Two rods one is semi circular of thermal conductivity K_(1) and otheir is straight of thermal conductivity K_(2) and of same cross sectional area are joined as shown in the The points A and B are maintained at same temperature difference. If rate of flow of heat is same in two rods then K_(1)//K_(2) is .

    A
    `2:pi`
    B
    `1:2`
    C
    `pi:2`
    D
    `3:2`

  • A metal rod of length 2 m has cross sectional areas 2 A and A as shown in figure. The ends are maintained at temperatures 100° C and 70° C . The temperature at middle point C is

    A
    `80^(@)C`
    B
    `85^(@)C`
    C
    `90^(@)C`
    D
    `95^(@)C`

  • A uniform cylindrical rod of length L and cross-sectional area by forces as shown in figure. The elongation produced in the rod is

    A
    `(3F L)/(8 AY)`
    B
    `(3FL)/(5AY)`
    C
    `(8FL)/(3AY)`
    D
    `(5FL)/(3AY)`

    • Similar Questions

    Explore conceptually related problems

    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 rods are made from the same material and having the same cross-sectional area and length have been joined as shown in the figure. The left end and right end are kept 0^@C and 100^@C , respectively . The temperature of the junction of three rods will be

    Two rods of different materials having differnet lengths and same cross sectional areas are joined end to end in a straight line. The free ends of this compound rod are maintained at different temperatures The temperature gradient in each rod will be .

    Three rods A, B and C of the same length and cross- sectional area are joined in series as shown. The temperature at the junction of A and B , in equilibriu, is

    Three conducting rods of same material and cross-section are shown in figure. Temperatures of A,D and C are maintained at 20^(@)C, 90^(@)C and 0^(@)C . The ratio of lengths BD and BC if there is no heat flow in AB is

    Home
    Profile