| ⇦ | 
| ⇨ |
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: - An electric dipole of length 1 cm is placed with the axis making an angle of 30⁰
- An inductor coil is connected to a 12 V battery and drawing a current 24 A. This coil
- Two pendulums A and B are oscillating simultaneously with time period
- If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio
- In a given process on an ideal gas, dW=0 and dQ<0. Then for the gas
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An electric dipole of length 1 cm is placed with the axis making an angle of 30⁰
- An inductor coil is connected to a 12 V battery and drawing a current 24 A. This coil
- Two pendulums A and B are oscillating simultaneously with time period
- If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio
- In a given process on an ideal gas, dW=0 and dQ<0. Then for the gas
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