Class 11 Exam > Class 11 Questions > If a film of width l is stretched in the long...
Start Learning for Free
If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given by
- a)S = F/l
- b)S = F/3l
- c)S = F/4l
- d)S = F/2l
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
If a film of width l is stretched in the longitudinal direction a dist...
- Let L be the width of the film. Since the film has two surfaces, the total length along which the surface force acts on the slider is 2L.
- The surface tension S in the film is defined as the ratio of the surface force F to the length d (perpendicular to the force) along which the force acts S=F/d
- Hence, in the case, d = 2L S=F/2L
Most Upvoted Answer
If a film of width l is stretched in the longitudinal direction a dist...
Explanation:
Surface tension is defined as the force acting per unit length on the surface of a liquid in contact with a gas or another liquid. It is denoted by 'S'. When a film of width 'l' is stretched in the longitudinal direction a distance 'd' by force 'F', the surface tension can be calculated using the formula:
S = F/2l
Here's why:
- The force F is acting on both sides of the film, so the total force acting on the film is 2F.
- The film has been stretched to a length of l + d. So, the force per unit length of the film is F/(l + d).
- However, we are interested in the surface tension, which is defined as the force per unit length of the surface of the film (not the force per unit length of the entire film).
- Since the surface of the film has a width of l, we need to divide the force by the width of the surface, i.e., F/(l + d) × l.
- Simplifying this expression, we get:
S = F/(l + d) × l / 2
Simplifying further, we get:
S = F/2l
Therefore, the correct option is D, i.e., S = F/2l.
Surface tension is defined as the force acting per unit length on the surface of a liquid in contact with a gas or another liquid. It is denoted by 'S'. When a film of width 'l' is stretched in the longitudinal direction a distance 'd' by force 'F', the surface tension can be calculated using the formula:
S = F/2l
Here's why:
- The force F is acting on both sides of the film, so the total force acting on the film is 2F.
- The film has been stretched to a length of l + d. So, the force per unit length of the film is F/(l + d).
- However, we are interested in the surface tension, which is defined as the force per unit length of the surface of the film (not the force per unit length of the entire film).
- Since the surface of the film has a width of l, we need to divide the force by the width of the surface, i.e., F/(l + d) × l.
- Simplifying this expression, we get:
S = F/(l + d) × l / 2
Simplifying further, we get:
S = F/2l
Therefore, the correct option is D, i.e., S = F/2l.
Free Test
FREE
| Start Free Test |
Community Answer
If a film of width l is stretched in the longitudinal direction a dist...
A or d
|
Explore Courses for Class 11 exam
|
|
Top Courses for Class 11View all
Question Description
If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer?.
If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer?.
Solutions for If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice If a film of width l is stretched in the longitudinal direction a distance d by force F, surface tension is given bya)S = F/lb)S = F/3lc)S = F/4ld)S = F/2lCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup