| ⇦ | 
| ⇨ |
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: - Let A = i Acosθ +j B sinθ be any vector.Another vector B which is normal to A is
- Three objects coloured black, gray and white can withstand hostile conditions upto 2800⁰C.
- The wetability of a surface by a liquid depends primarily on
- A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire
- If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Let A = i Acosθ +j B sinθ be any vector.Another vector B which is normal to A is
- Three objects coloured black, gray and white can withstand hostile conditions upto 2800⁰C.
- The wetability of a surface by a liquid depends primarily on
- A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire
- If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength
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