Question # 1

Battery converts chemical energy into which energy:

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Mechanical

Electrical

Thermal

None of these

the number of waves passing through a point in one second is called:

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time period

cycle

frequency

amplitude

If Current flowing through switch then the output is expressed as:

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0

1

-1

2

the substance in which electric current flows easily is called:

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transistor

semi conductor

insulator

conductor

A converging mirror with a radius of 20cm creates a real image 30 cm from the mirror. What is the object distance:

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5.0 cm

7.5 cm

15 cm

20 cm

The presence of a magnetic field can be detected by a

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small mass

Stationary positive charge

Stationary negative charge

Magnetic compass

X=A.B. This equation is used for which operation:

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AND

OR

NOT

NAND

The sound waves are the example of:

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Longitudinal waves

Transverse waves

Electromagnetic waves

x-rays

When a body moves to and fro about a point its motion is called:

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Random motion

Linear motion

Vibratory motion

Rotatory motion

The resistance of conductors is due to:

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Protons

Fixed atoms

Molecules

Neutrons

The particles emitted from a hot cathode surface are:

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Positive ions

Negative ions

Proton

Electron

The maximum displacement from mean position is called:

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Maximum height

Time period

Amplitude

Interval

Mathematical form of Ohm's law is:

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V = IR

V = I2R

V = Qt

V = IR2

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