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Heat and Thermodynamics question

2005 · Shift 0 · Q153
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Heat and Thermodynamics question

2005 · Shift 0 · Q153

JEE MainPhysicsHeat and ThermodynamicsMCQ+4 / −1
The figure shows a system of two concentric spheres of radii r1{r_1}r1​ and r2{r_2}r2​ are kept at temperatures T1{T_1}T1​ and T2{T_2}T2​, respectively. The radial rate of flow of heat in a substance between the two concentric spheres is proportional to AIEEE 2005 Physics - Heat and Thermodynamics Question 405 English
  1. A
    In(r2r1)In\left( {{{{r_2}} \over {{r_1}}}} \right)In(r1​r2​​)
  2. B
    (r2−r1)(r1r2){{\left( {{r_2} - {r_1}} \right)} \over {\left( {{r_1}{r_2}} \right)}}(r1​r2​)(r2​−r1​)​
  3. C
    (r2−r1){\left( {{r_2} - {r_1}} \right)}(r2​−r1​)
  4. D
    r1r2(r2−r1){{{r_1}{r_2}} \over {\left( {{r_2} - {r_1}} \right)}}(r2​−r1​)r1​r2​​
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