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

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

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2V

9V

18V

36V

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

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potential difference

Energy

Coulomb

Electric current

The current used in houses is:

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A.C.

Conventiona current

Current

D.C

Which type of image is formed by a convex lens on a screen:

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Inverted and real

Inverted and virtual

Upright and real

Upright and virtual

The resistance of voltmeter is:

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zero

low

Very high

10Ω

Battery converts chemical energy into which energy:

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Mechanical

Electrical

Thermal

None of these

LDR can act as:

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Diode

Switch

Transistor

Rectifier

The index of refraction depends on:

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The focal length

The speed of light

The image distance

The object distance

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

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