| ⇦ | 
| ⇨ |
A metal wire of circular cross-section has a resistance R₁. The wire is now stretched without breaking, so that its length is doubled and the density is assumed to remain the same. If the resistance of the wire now becomes R₂, then R₂:R₁ is
Options
(a) (1:1)
(b) (1:2)
(c) (4:1)
(d) (1:4)
Correct Answer:
(4:1)
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions: - Calculate power output of ₉₂²³⁵U reactor, if it takes 30 days to use up 2 kg of fuel,
- Two cells when connected in series are balanced on 8m on a potentiometer.
- During production of cathode ray
- If r denotes the distance between sun and the earth, then the angular momentum of the earth
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Calculate power output of ₉₂²³⁵U reactor, if it takes 30 days to use up 2 kg of fuel,
- Two cells when connected in series are balanced on 8m on a potentiometer.
- During production of cathode ray
- If r denotes the distance between sun and the earth, then the angular momentum of the earth
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
Topics: Current Electricity (136)
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