Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Properties of Matter question

2022 · 26 Jul · Shift 1 · Q58
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Properties of Matter
  5. /2022 · 26 Jul · Shift 1 · Q58

Properties of Matter question

2022 · 26 Jul · Shift 1 · Q58

JEE MainPhysicsProperties of MatterMCQ+4 / −1
A water drop of radius 1 cm1 \mathrm{~cm}1 cm is broken into 729 equal droplets. If surface tension of water is 75 dyne/cm\mathrm{cm}cm, then the gain in surface energy upto first decimal place will be : (Given π=3.14\pi=3.14π=3.14 )
  1. A
    8.5×10−4 J8.5 \times 10^{-4} \mathrm{~J}8.5×10−4 J
  2. B
    8.2×10−4 J8.2 \times 10^{-4} \mathrm{~J}8.2×10−4 J
  3. C
    7.5×10−4 J7.5 \times 10^{-4} \mathrm{~J}7.5×10−4 J
  4. D
    5.3×10−4 J5.3 \times 10^{-4} \mathrm{~J}5.3×10−4 J
PreviousNext

More from Properties of Matter

  • In an experiment to determine the Young's modulus of wire of a length exactly 1 m, the extension in the length of the wire is measured as 0.4 mm with an uncertainty of ±0.02 mm when a load of 1 kg…2022 · Numerical
  • The area of cross section of the rope used to lift a load by a crane is 2.5×10−4 m2. The maximum lifting capacity of the crane is 10 metric tons. To increase the lifting capacity of the crane to 25 metric tons, the…2022 · MCQ
  • A uniform heavy rod of mass 20 kg, cross sectional area 0.4 m2 and length 20 m is hanging from a fixed support. Neglecting the lateral contraction, the elongation in the rod due to its own weight is x×10−9 m…2022 · Numerical
  • The elastic behaviour of material for linear stress and linear strain, is shown in the figure. The energy density for a linear strain of 5 × 10 − 4 is ​ kJ/m3. Assume that material is elastic upto the… Includes diagram2022 · Numerical
  • The elongation of a wire on the surface of the earth is 10 − 4 m. The same wire of same dimensions is elongated by 6 × 10 − 5 m on another planet. The acceleration due to gravity on the planet will be ​…2022 · Numerical
  • An ideal fluid of density 800 kgm − 3, flows smoothly through a bent pipe (as shown in figure) that tapers in cross-sectional area from a to 2a​. The pressure difference between the wide and narrow sections of pipe is 4100 Pa.… Includes diagram2022 · Numerical
  • If p is the density and η is coefficient of viscosity of fluid which flows with a speed v in the pipe of diameter d, the correct formula for Reynolds number Re is :2022 · MCQ
  • Two cylindrical vessels of equal cross-sectional area 16 cm2 contain water upto heights 100 cm and 150 cm respectively. The vessels are interconnected so that the water levels in them become equal.…2022 · MCQ