⇦ | ![]() | ⇨ |
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 current is flowing through resistance. A potential difference of 120 V
- A uniform chain of length L and mass m is kept on a smooth table. It is released
- In common base mode of a transistor, the collector current is 5.488 mA
- Dimensional formula of magnetic field in terms of mass M, length L
- A particle moving in a straight line covers half the distance with speed of 3 m/s
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A current is flowing through resistance. A potential difference of 120 V
- A uniform chain of length L and mass m is kept on a smooth table. It is released
- In common base mode of a transistor, the collector current is 5.488 mA
- Dimensional formula of magnetic field in terms of mass M, length L
- A particle moving in a straight line covers half the distance with speed of 3 m/s
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