Concepts Of Physics MCQ Edition [Volume 1]
- Exam
- Concepts Of Physics MCQ Edition [Volume 1]
- Subject
- Physics
- Chapter
- Some Mechanical Properties of Matter
Concepts Of Physics MCQ Edition [Volume 1] · Physics · Some Mechanical Properties of Matter
Consider an ice cube of edge 1.0 cm placed in a gravity-free hall....
Consider an ice cube of edge placed in a gravity-free hall. Determine the surface area of the water after the ice melts. Ignore the difference in densities between ice and water.
Options
- A
- B
- C
- D
Correct answer
A.
Step-by-step solution
Volume of the ice cube is .
Since the difference in densities is ignored, the volume of water formed is also .
In a gravity-free space, the liquid takes a spherical shape to minimize its surface area due to surface tension.
Let the radius of the spherical water drop be . Equating the volumes:
The surface area of the spherical drop is given by .
Since the difference in densities is ignored, the volume of water formed is also .
In a gravity-free space, the liquid takes a spherical shape to minimize its surface area due to surface tension.
Let the radius of the spherical water drop be . Equating the volumes:
The surface area of the spherical drop is given by .