PYQ Vault
EbooksTutor

A drop splits into N equal droplets: total surface energy of the droplets compared with the drop

The same question, asked 6 times: 16 May 2023 S2*, 12 May 2024 S1, 20 Apr 2025 S1, 20 Apr 2025 S2*, 11 Apr 2026 S2*, 13 Apr 2026 S2. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    16 May 2023 S2

    36
    A liquid drop having surface energy EE is spread into 512 droplets of same size. The final surface energy of the droplets is

    Tap an option to check your answer.

  2. Question 2

    12 May 2024 S1

    18
    A spherical drop of liquid splits into 1000 identical spherical drops. If E1E_{1} is the surface energy of the original drop and E2E_{2} is the total surface energy of the resulting drops, then E1E2=x10\frac{E_{1}}{E_{2}}=\frac{x}{10}. Then value of xx is

    Tap an option to check your answer.

  3. Question 3

    20 Apr 2025 S1

    26
    The surface energy of a liquid drop is ' VV '. It is sprayed into 1000 equal droplets. The surface energy of all the droplets is

    Tap an option to check your answer.

  4. Question 4

    20 Apr 2025 S1

    32
    A liquid drop having surface energy E is spread into 729 droplets of same size. The final surface energy of the droplets is

    Tap an option to check your answer.

  5. Question 5

    20 Apr 2025 S2

    46
    A liquid drop having surface energy EE is sprayed into 512 droplets of same size. The final surface energy is

    Tap an option to check your answer.

  6. Question 6

    11 Apr 2026 S2

    109
    A liquid drop having surface energy E is sprayed into 512512 droplets of the same size. Then the final surface energy is

    Tap an option to check your answer.

  7. Question 7

    13 Apr 2026 S2

    111
    A spherical drop of liquid splits into 10001000 identical spherical drops. If uiu_i is the surface energy of the original drop and ufu_f is the total surface energy of the resulting drops, the (ignoring evaporation). uf/ui=(10/x)u_f/u_i = (10/x). Then value of xx is

    Tap an option to check your answer.