Superconductivity characterized by: MCQ with Answer and Explanation

Question Report Error
Superconductivity characterized by:
A. Infinite resistance
B. Zero permeability
C. Zero resistance below T_c
D. High conductivity only
Answer: Option C
Solution (By JKExamLibrary)
Superconductors: zero electrical resistance below critical temperature T_c, plus Meissner effect (expel magnetic fields). Memory aid: 'Superconductor: R=0 below T_c; perfect diamagnetism'. Modern physics concept frequently tested in competitive exams.
This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error
The unit of magnetic flux is
A. Farad
B. Henry
C. Tesla
D. Weber
Discuss

Correct Answer: Option D

Explanation:
Weber (Wb) = T m².
This question belongs to: Science Physics
Question #2 Report Error
A body is thrown vertically upwards with kinetic energy 100 J. At highest point, kinetic energy is
A. 0 J
B. 200 J
C. 50 J
D. 100 J
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Correct Answer: Option A

Explanation:
At highest point velocity zero, so K.E. = 0. All converted to P.E.
This question belongs to: Science Physics
Question #3 Report Error
The velocity of a body changes from 2 m/s to 10 m/s in 4 s. Distance covered in this time is (assuming constant acceleration)
A. 16 m
B. 32 m
C. 24 m
D. 48 m
Discuss

Correct Answer: Option C

Explanation:
a = (10-2)/4 = 2 m/s². s = 2×4 + ½×2×16 = 8+16=24 m. Or average velocity 6 m/s ×4=24.
This question belongs to: Science Physics
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