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Properties of Matter question

2014 · Shift 2 · Q50
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Properties of Matter question

2014 · Shift 2 · Q50

JEE AdvancedPhysicsProperties of MatterMCQ+3 / −1
A glass capillary tube is of the shape of truncated cone with an apex angle α\alphaα so that its two ends have cross sections of different radii. When dipped in water vertically, water rises in it to a height h, where the radius of its cross section is b. If the surface tension of water is S, its density is ρ\rhoρ, and its contact angle with glass is θ\thetaθ, the value of h will be (g is the acceleration due to gravity) JEE Advanced 2014 Paper 2 Offline Physics - Properties of Matter Question 19 English
  1. A
    2Sbρgcos⁡(θ−α){{2S} \over {b\rho g}}\cos (\theta - \alpha )bρg2S​cos(θ−α)
  2. B
    2Sbρgcos⁡(θ+α){{2S} \over {b\rho g}}\cos (\theta + \alpha )bρg2S​cos(θ+α)
  3. C
    2Sbρgcos⁡(θ−α/2){{2S} \over {b\rho g}}\cos (\theta - \alpha /2)bρg2S​cos(θ−α/2)
  4. D
    2Sbρgcos⁡(θ+α/2){{2S} \over {b\rho g}}\cos (\theta + \alpha /2)bρg2S​cos(θ+α/2)
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