Question # 1

Electron gun has an electrode called for controlling the flow of electrons in the beam:

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Plate

Grid

Screen

Filament

Which we double the voltage in a simple electric circuit. We double the

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Current

Power

Resistance

both a and b

Image formed on a camera is:

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Real, inverted, and diminished

Virtual, upright and diminished

Virtual, upright and magnified

Real, inverted and magnified

The mirror whose outer surface is reflecting is called:

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Concave mirror

Convex mirror

Mirror

Lens

Which instrument is used to detect current?

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Galvanometer

Voltmeter

Ammeter

Electroscope

What type of graph is in between V and I?

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Curved

Parabola

Straight line

None of these

What is the voltage across a 6Ω resistor when 3 A of current passes through it?

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2 V

9 V

18 V

36 V

The rate of flow of charge through any cross-sectional area is called:

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potential difference

Energy

Coulomb

Electric current

The property of substance, which opposes the flow of current through it is called.

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Resistance

Reactance

Resistivity

None of these

Half of radius of curvature is called:

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Focal length

Principal focus

Axis

Aperture

Which wire has lowest resistance?

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Thick wire

Thin wire

Very thin wire

All

Which instrument measures the potential difference:

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Voltmeter

Barometer

Galvanometer

Ammeter

Resistance of conductor is directly proportional to:

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Length

Pressure

Area

All of these

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Physics 10th Class English Medium Unit 5 Online Test MCQs With Answers

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