Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Properties of Matter question

2023 · Q146
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Properties of Matter
  5. /2023 · Q146

Properties of Matter question

2023 · Q146

NEETPhysicsProperties of MatterMCQ+4 / −1

The amount of energy required to form a soap bubble of radius 2 cm2 \mathrm{~cm}2 cm from a soap solution is nearly: (surface tension of soap solution =0.03 N m−1=0.03 \mathrm{~N} \mathrm{~m}^{-1}=0.03 N m−1 )

  1. A
    5.06×10−4 J5.06 \times 10^{-4} \mathrm{~J}5.06×10−4 J
  2. B
    3.01×10−4 J3.01 \times 10^{-4} \mathrm{~J}3.01×10−4 J
  3. C
    50.1×10−4 J50.1 \times 10^{-4} \mathrm{~J}50.1×10−4 J
  4. D
    30.16×10−4 J30.16 \times 10^{-4} \mathrm{~J}30.16×10−4 J
View written solutionFree

Correct answer: B

$$E=2 T\left(4 \pi \mathrm{R}^{2}\right)$$

$$=2(0.03)(4)(3.14)\left(2 \times 10^{-2}\right)^{2}$$

$$=3.01 \times 10^{-4} \mathrm{~J}$$

PreviousNext

More from Properties of Matter

  • The venturi-meter works on :2023 · MCQ
  • Let a wire be suspended from the ceiling (rigid support) and stretched by a weight W attached at its free end. The longitudinal stress at any point of cross-sectional area A of the wire is :2023 · MCQ
  • Two copper vessels A and B have the same base area but of different shapes. A takes twice the volume of water as that B requires to fill upto a particular common height. Then the correct statement among the following is :2022 · MCQ
  • The terminal velocity of a copper ball of radius 5 mm falling through a tank of oil at room temperature is 10 cm s−1. If the viscosity of oil at room temperature is 0.9 kg m−1 s−1, the viscous drag force is :2022 · MCQ
  • A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball (v) as a function of time (t) is Includes diagram2022 · MCQ
  • If a soap bubble expands, the pressure inside the bubble2022 · MCQ
  • Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The stretching of a spring is determined by the shear modulus of the material of the spring. Reason (R) : A coil…2022 · MCQ
  • The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerin becomes constant after some time. If the density of glycerin is 2d​, then the viscous force acting on the ball will be :2021 · MCQ