Start free

Physics · Mechanical Properties of Matter

NEET (UG) 2023 — Question 3

The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly : (surface tension of soap solution =0.03 N m−1)\left.=0.03 \mathrm{~N} \mathrm{~m}^{-1}\right)

  1. Option A:

    5.06×10−4 J5.06 \times 10^{-4} \mathrm{~J}

  2. Option B:

    3.01×10−4 J3.01 \times 10^{-4} \mathrm{~J}

    Correct
  3. Option C:

    50.1×10−4 J50.1 \times 10^{-4} \mathrm{~J}

  4. Option D:

    30.16×10−4 J30.16 \times 10^{-4} \mathrm{~J}

Answer: B

Step-by-step solution

 Sol. Amount of energy required =[S×ΔA]×2⇒ Energy required =[0.03×4×π×4×10−4]×2=3.015×10−4 J\begin{aligned} & \text { Sol. Amount of energy required }=[S \times \Delta A] \times 2 \\ & \begin{aligned} \Rightarrow \text { Energy required } & =\left[0.03 \times 4 \times \pi \times 4 \times 10^{-4}\right] \times 2 \\ & =3.015 \times 10^{-4} \mathrm{~J}\end{aligned}\end{aligned}

Answer key and solution verified before publishing.

Practise Mechanical Properties of Matter

Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.

Solve a similar one free
Exam
NEET (UG) 2023
Paper
2023 paper
Subject
Physics
Chapter
Mechanical Properties of Matter
Topic
Surface Tension and Surface Energy

More Mechanical Properties of Matter questions from this paper

The amount of energy required to form a soap bubble of radius 2 cm… | NEET (UG) 2023 PYQ with Solution · DhiX AI