| ⇦ | 
| ⇨ |
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 has initial velocity (2i⃗+3j⃗) and acceleration (0.3i⃗+0.2j⃗). The magnitude
- Sound waves travel at 350m/s through a warm air and at 3500 m/s through brass
- The angle of incidence at which reflected light is totally polarised for refraction
- Power dissipated in an LCR series circuit connected to an a.c source of emf ? is
- A series L-C-R circuit contains inductance 5 mH, capacitance 2 μF and resistance
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle has initial velocity (2i⃗+3j⃗) and acceleration (0.3i⃗+0.2j⃗). The magnitude
- Sound waves travel at 350m/s through a warm air and at 3500 m/s through brass
- The angle of incidence at which reflected light is totally polarised for refraction
- Power dissipated in an LCR series circuit connected to an a.c source of emf ? is
- A series L-C-R circuit contains inductance 5 mH, capacitance 2 μF and resistance
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