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A composite block is made of slabs A,B,C,D and E of different thermal conductivities ( given in terms of a constant K ) and size ( given in terms of length, L) as shown in the figure. All slabs are of same width. Heat Q flows only from left to right through the blocks. Then in steady state
  • a)
    Heat flow through A and E slabs are same
  • b)
    Heat flow through slab E is maximum
  • c)
    Temperature difference across slab E is smallest
  • d)
    Heat flow through C = heat flow through B + heat flow through D
Correct answer is option 'A,B,D'. Can you explain this answer?
Most Upvoted Answer
A composite block is made of slabs A,B,C,D and E of different thermal...
Thermal resistance R = ℓ / KA
(Here w = width )
=
RA : RB : RC : RD : RE
15 : 160 : 60 : 96 : 12
So, let us write, RA = 15 R, RB = 160 R etc and draw a simple electrical circuit as shown in figure
H = Heat current = Rate of heat flow.
HA = HE = H
∴ Heat flow through A and E slabs are same, is correct.
In parallel current distributes in inverse ratio of resistance.
=
= 9 : 24 : 15
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Community Answer
A composite block is made of slabs A,B,C,D and E of different thermal...
Thermal resistance R = ℓ / KA
(Here w = width )
=
RA : RB : RC : RD : RE
15 : 160 : 60 : 96 : 12
So, let us write, RA = 15 R, RB = 160 R etc and draw a simple electrical circuit as shown in figure
H = Heat current = Rate of heat flow.
HA = HE = H
∴ Heat flow through A and E slabs are same, is correct.
In parallel current distributes in inverse ratio of resistance.
=
= 9 : 24 : 15
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A composite block is made of slabs A,B,C,D and E of different thermal conductivities ( given in terms of a constant K ) and size ( given in terms of length, L) as shown in the figure. All slabs are of same width. Heat Q flows only from left to right through the blocks. Then in steady statea)Heat flow through A and E slabs are sameb)Heat flow through slab E is maximumc)Temperature difference across slab E is smallestd)Heat flow through C = heat flow through B + heat flow through DCorrect answer is option 'A,B,D'. Can you explain this answer?
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A composite block is made of slabs A,B,C,D and E of different thermal conductivities ( given in terms of a constant K ) and size ( given in terms of length, L) as shown in the figure. All slabs are of same width. Heat Q flows only from left to right through the blocks. Then in steady statea)Heat flow through A and E slabs are sameb)Heat flow through slab E is maximumc)Temperature difference across slab E is smallestd)Heat flow through C = heat flow through B + heat flow through DCorrect answer is option 'A,B,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 A composite block is made of slabs A,B,C,D and E of different thermal conductivities ( given in terms of a constant K ) and size ( given in terms of length, L) as shown in the figure. All slabs are of same width. Heat Q flows only from left to right through the blocks. Then in steady statea)Heat flow through A and E slabs are sameb)Heat flow through slab E is maximumc)Temperature difference across slab E is smallestd)Heat flow through C = heat flow through B + heat flow through DCorrect answer is option 'A,B,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 A composite block is made of slabs A,B,C,D and E of different thermal conductivities ( given in terms of a constant K ) and size ( given in terms of length, L) as shown in the figure. All slabs are of same width. Heat Q flows only from left to right through the blocks. Then in steady statea)Heat flow through A and E slabs are sameb)Heat flow through slab E is maximumc)Temperature difference across slab E is smallestd)Heat flow through C = heat flow through B + heat flow through DCorrect answer is option 'A,B,D'. Can you explain this answer?.
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