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Three rods AB, BC and BD of same length l and cross section A are arranged as shown. The end D is immersed in ice whose mass is 440 g and is at 0°C . The end C is maintained at 100°C. Heat is supplied at constant rate of 200 cal / s . Thermal conductivities of AB , BC and BD are K , 2K and K/2 , respectively. Time after which whole ice will melt is (K = 100 cal/ms°C, A = 10 cm2, l = 1 m)
  • a)
    400 s
  • b)
    600 s
  • c)
    700 s
  • d)
    800 s
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Three rods AB, BC and BD of same length l and cross section A are arra...
Let θ be the temperature of B

Substituting values  θ = 880°C
Rate of heat flow from B to D 

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Three rods AB, BC and BD of same length l and cross section A are arranged as shown. The end D is immersed in ice whose mass is 440 g and is at 0°C . The end C is maintained at 100°C. Heat is supplied at constant rate of 200 cal / s . Thermal conductivities of AB , BC and BD are K , 2K and K/2 , respectively. Time after which whole ice will melt is (K = 100 cal/ms°C, A = 10 cm2, l = 1 m)a)400 sb)600 sc)700 sd)800 sCorrect answer is option 'D'. Can you explain this answer?
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Three rods AB, BC and BD of same length l and cross section A are arranged as shown. The end D is immersed in ice whose mass is 440 g and is at 0°C . The end C is maintained at 100°C. Heat is supplied at constant rate of 200 cal / s . Thermal conductivities of AB , BC and BD are K , 2K and K/2 , respectively. Time after which whole ice will melt is (K = 100 cal/ms°C, A = 10 cm2, l = 1 m)a)400 sb)600 sc)700 sd)800 sCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Three rods AB, BC and BD of same length l and cross section A are arranged as shown. The end D is immersed in ice whose mass is 440 g and is at 0°C . The end C is maintained at 100°C. Heat is supplied at constant rate of 200 cal / s . Thermal conductivities of AB , BC and BD are K , 2K and K/2 , respectively. Time after which whole ice will melt is (K = 100 cal/ms°C, A = 10 cm2, l = 1 m)a)400 sb)600 sc)700 sd)800 sCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Three rods AB, BC and BD of same length l and cross section A are arranged as shown. The end D is immersed in ice whose mass is 440 g and is at 0°C . The end C is maintained at 100°C. Heat is supplied at constant rate of 200 cal / s . Thermal conductivities of AB , BC and BD are K , 2K and K/2 , respectively. Time after which whole ice will melt is (K = 100 cal/ms°C, A = 10 cm2, l = 1 m)a)400 sb)600 sc)700 sd)800 sCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Three rods AB, BC and BD of same length l and cross section A are arranged as shown. The end D is immersed in ice whose mass is 440 g and is at 0°C . The end C is maintained at 100°C. Heat is supplied at constant rate of 200 cal / s . Thermal conductivities of AB , BC and BD are K , 2K and K/2 , respectively. Time after which whole ice will melt is (K = 100 cal/ms°C, A = 10 cm2, l = 1 m)a)400 sb)600 sc)700 sd)800 sCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
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