| ⇦ | 
| ⇨ |
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: - If energy(E), velocity(V) and time(T) are chosen as fundamental quantities,
- Two spheres of mass m and M are situated in air and the gravitational force
- The rest energy of an electron is
- The work of 146 kJ is performed in order to compress one kilo mole fo gas adiabatically
- A certain mass of Hydrogen is changed to Helium by the process of fusion
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If energy(E), velocity(V) and time(T) are chosen as fundamental quantities,
- Two spheres of mass m and M are situated in air and the gravitational force
- The rest energy of an electron is
- The work of 146 kJ is performed in order to compress one kilo mole fo gas adiabatically
- A certain mass of Hydrogen is changed to Helium by the process of fusion
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