Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics II NEET>Chapter 5 - Mechanical Properties of Fluids>TOPICWISE QUESTIONS>Q 85

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A liquid drop of diameter $D$ breaks into $27$ tiny drops. The resultant change in energy is,

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Important Questions on Mechanical Properties of Fluids

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Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics II NEET>Chapter 5 - Mechanical Properties of Fluids>TOPICWISE QUESTIONS>Q 86

A soap bubble in vacuum has a radius of

3 cm

and another soap bubble in vacuum has a radius of

4 cm

.
If the two bubbles coalesce under isothermal condition, then the radius of the new bubble is

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Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics II NEET>Chapter 5 - Mechanical Properties of Fluids>TOPICWISE QUESTIONS>Q 87

Shape of meniscus for a liquid of zero angle of contact is

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Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics II NEET>Chapter 5 - Mechanical Properties of Fluids>TOPICWISE QUESTIONS>Q 88

If a water drop is kept between two glass plates, then its shape is

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Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics II NEET>Chapter 5 - Mechanical Properties of Fluids>TOPICWISE QUESTIONS>Q 89

Two capillary tubes of the same diameter are put vertically, one each in two liquids whose relative densities are

0.8

and

0.6

and surface tensions are

60 dyne {cm}^{- 1}

and

50 dyne {cm}^{- 1}

, respectively. Ratio of heights of liquids in the two tubes is,

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Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics II NEET>Chapter 5 - Mechanical Properties of Fluids>TOPICWISE QUESTIONS>Q 90

Work done in increasing the size of a soap bubble from a radius of $3 cm$ to $5 cm$ is nearly

( $Surface tension of soap solution = 0.03 N m^{- 1}$ )

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Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics II NEET>Chapter 5 - Mechanical Properties of Fluids>TOPICWISE QUESTIONS>Q 91

Two mercury drops (each of radius

r

) merge to form a bigger drop. The surface energy of the bigger drop, if

T

is the surface tension, is

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Chapterwise/Topicwise Daily Practice Problems (DPP) Mechanics II NEET>Chapter 5 - Mechanical Properties of Fluids>TOPICWISE QUESTIONS>Q 92

Which of the following is possible?