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Physics

Physics
Electric current is measured by which instrument?

Barometer
Ammeter
Voltmeter
Sinometer

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Physics
Least audible sound for most of the human ear is :

10.0 µ bar
5.0 µ bar
0.0002 µ bar
0.005 µ bar

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Physics
The sound produced by a bat is–

Subsonic
Audible
Infrasonic
Ultrasonic

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Physics
A fountain pen works on the principle of

Bernoulli's principle
Flow of liquids from higher to lower potential
Capillary action
Viscosity of liquids

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Physics
Radioactive elements can be traced out in living cell through a technique called

Centrifugation
All listed here
Chromatography
Auto radiography

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Physics
The width of depletion layer of a P-N junction

Is independent of applied voltage
Decreases with light doping
Is increased under reverse bias
Increases with heavy doping

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MORE MCQ ON Physics

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