| ⇦ | 
| ⇨ |
The surface tension of soap solution is 0.03 N/m. The work done in blowing to form a soap bubble of surface area 40 cm², in joules is
Options
(a) 1.2×10⁻⁴
(b) 2.4×10⁻⁴
(c) 12×10⁻⁴
(d) 24×10⁻⁴
Correct Answer:
2.4×10⁻⁴
Explanation:
Given: Surface tension of a soap solution,
T = 0.03 N/m
Surface area, A = 40 cm² = 40 x 10⁻⁴ m²
Since the soap has two surfaces,
.·. Work done, W = T x 24
= 0.03 x 2 40 x 10⁻⁴ = 2.4 x 10⁻⁴J
Related Questions: - A liquid wets a solid completely. The meniscus of the liquid in a sufficiently long
- A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless
- Which of the following is an example of ideal black body?
- A wire having resistance 12Ω is bent in the form of an equilateral triangle.
- A current is flowing through resistance. A potential difference of 120 V
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A liquid wets a solid completely. The meniscus of the liquid in a sufficiently long
- A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless
- Which of the following is an example of ideal black body?
- A wire having resistance 12Ω is bent in the form of an equilateral triangle.
- A current is flowing through resistance. A potential difference of 120 V
Topics: Properties of Bulk Matter (130)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply