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Properties of Matter question

2021 · 26 Feb · Shift 1 · Q47
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  5. /2021 · 26 Feb · Shift 1 · Q47

Properties of Matter question

2021 · 26 Feb · Shift 1 · Q47

JEE MainPhysicsProperties of MatterMCQ+4 / −1
A large number of water drops, each of radius r, combine to have a drop of radius R. If the surface tension is T and mechanical equivalent of heat is J, the rise in heat energy per unit volume will be :
  1. A
    2TJ(1r−1R){{2T} \over J}\left( {{1 \over r} - {1 \over R}} \right)J2T​(r1​−R1​)
  2. B
    3TJ(1r−1R){{3T} \over J}\left( {{1 \over r} - {1 \over R}} \right)J3T​(r1​−R1​)
  3. C
    3TrJ{{3T} \over rJ}rJ3T​
  4. D
    2TrJ{{2T} \over rJ}rJ2T​
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