| ⇦ | 
| ⇨ |
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: - A microscope is having objective of focal length 1 cm and eye-piece of focal length 6 cm.
- A photon of energy 10.2 eV collide inelastically with hydrogen atom in ground state
- A wire is stretched under a force. If the wire suddenly snaps the temperature
- A parallel plate capacitor as a uniform electric field E in the space between the plates
- The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A microscope is having objective of focal length 1 cm and eye-piece of focal length 6 cm.
- A photon of energy 10.2 eV collide inelastically with hydrogen atom in ground state
- A wire is stretched under a force. If the wire suddenly snaps the temperature
- A parallel plate capacitor as a uniform electric field E in the space between the plates
- The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.
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