| ⇦ | 
| ⇨ |
The surface tension of a liquid is 5 newton per metre. If a film is held on a ring of area 0.02 metre², its surface energy is about
Options
(a) 5×10⁻² J
(b) 2.5×10⁻² J
(c) 2×10⁻¹ J
(d) 3×10⁻¹ J
Correct Answer:
2×10⁻¹ J
Explanation:
Surface tension = Surface energy/Surface Area
Since the film has two surface
.·. Surface energy = (5 Nm⁻¹) (2 x 0.02 m²) = 2 x 10⁻¹ J.
Related Questions: - A particle is dropped vertically from rest, from a height.The time taken by it to fall
- The turn ratio of a transformer is 1:2. An electrolytic dc cell of emf 2 volt is connected
- A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by
- A body is moving in a vertical circle. The string must remain taut at the highest point
- If fundamental frequency of closed pipe is 50 Hz then frequency of 2nd overtone
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle is dropped vertically from rest, from a height.The time taken by it to fall
- The turn ratio of a transformer is 1:2. An electrolytic dc cell of emf 2 volt is connected
- A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by
- A body is moving in a vertical circle. The string must remain taut at the highest point
- If fundamental frequency of closed pipe is 50 Hz then frequency of 2nd overtone
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