| ⇦ | 
| ⇨ |
The potential of a large liquid drop when eight liquid drops are combined is 20 V. Then the potential of each single drop was
Options
(a) 10 V
(b) 7.5 V
(c) 5 V
(d) 2.5 V
Correct Answer:
5 V
Explanation:
Volume of 8 drops = Volume of bigger drop
or, [(4/3) πr³] × 8 = (4/3) πR³ or 2r = R ——(i)
Charge is conserved. 8q = Q
.·. V’ = q / capacity = q / 4πε₀r
V = Q / capacity = Q / 4πε₀R
Then , V’ / V = (q / Q) × (R / r) or, V’ / 20 = (q / 8q) × (2r / r) = 1 / 4
or, V’ = 5 volt.
Related Questions: - When photons of energy hν are incident on the surface of photosensitive
- Identify the paramagnetic substance
- If the momentum of electron is changed by P, then the de-Broglie wavelength
- A ball rolls off the top of stair way with a horizontal velocity of magnitude 1.8 m/s
- In the given figure, a diode D is connected to an external resistance R=100 Ω
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When photons of energy hν are incident on the surface of photosensitive
- Identify the paramagnetic substance
- If the momentum of electron is changed by P, then the de-Broglie wavelength
- A ball rolls off the top of stair way with a horizontal velocity of magnitude 1.8 m/s
- In the given figure, a diode D is connected to an external resistance R=100 Ω
Topics: Electrostatics (146)
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