NAT I Medical Physics With Answers

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NAT I Medical Physics

Sr. # Questions Answers Choice
1 Choose the correct statement Both an ammeter and voltmeter should have small resistance Both an ammeter and a voltmeter should have large resistance An ammeter should have large resistance and a voltmeter should have small resistance An ammeter should have small resistance and a voltmeter should have large resistance
2 A moving charge will gain energy due to the application of Electric field Magnetic Both of these None of these
3 If a diamagnetic substance is brought near north or south pole of a bar magnet it is Attracted by the poles Repelled by the poles Repelled by north pole and attracted by the south pole Attracted by the north pole and repelled by the south pole
4 A voltmeter has resistance of 2000 ohms and it can measure up to 2V. If we want to increase its range to 10V then required resistance in series will be 2000 Ω 4000 Ω 6000 Ω 8000 Ω
5 In a voltmeter the conduction takes place due to Electrons only Holes only Electrons and holes Electrons and ions
6 A conducting wire is drawn to double its length Final resistivity of the material will be Double of the original one Half of the original one One-fourth of the original one Same as original one
7 A piece of fuse wire melts when a current of 15 ampere flows through it.With this current, if it dissipates 22.5 W. the resistance of fuse wire will be Zero 10 Ω 1 Ω 0.10 Ω
8 The conductivity of a superconductor is Infinite Very large Very small Zero
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