Question # 1

Which combination forms NAND gate:

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AND & OR

AND & NOT

NOT & OR

NAND & NOT

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

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Plate

Grid

Screen

Filament

Which gate is used for safety alarm:

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AND

NANAD

OR

NOR

Which one is a safety device?

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Switch

Fuse

Circuit breaker

Both B and C

The unit of power is _________

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Volt

Watt

Joule

Coulomb

Specific resistance of silver = ________ x 10^-sOhm-meter

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5.25

2.75

1.69

1.62

The center of curved surface of spherical mirror is called:

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Focus

Axis

Centre

Pole

The index of refraction depends on:

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The focal length

The speed of light

The image distance

The object distance

Current is equal to:

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IR²

CV

Q/t

IR

What is the power rating of a lamp connected to a 12 v source when it carries 2.5 A?

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4.8 W

14.5 W

30 W

60 W

How Galvanometer is connected in circuit to detect current?

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In Series

In Parallel

Fixed

Variable

Battery converts chemical energy into which energy:

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Mechanical

Electrical

Thermal

None of these

In OR operation inputs are connected as:

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Series

Parallel

Both series or parallel

None of these

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

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