Question # 1

NOT gate is also called:

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Converter

Inverter

Transmitter

Receiver

The index of refraction depends on:

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The focal length

The speed of light

the image distance

The object distance

Which device is used to store charge:

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Resister

Capacitor

Dielectric

Fuse

What type of graph is in between V and I, if metal obeys ohm’s law:

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Curved

Parabola

Straight line

None of these

The distance of spherical mirror is called:

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Curvature

Aperture

Sphere

a,b

In series combination of capacitors, each capacitor will have same:

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Voltage

Charge

Capacitance

Charge and voltage

If A input is 1 and B is zero, then in AND operation output will be:

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0

0.1

1

None of these

Why household appliances should be connected in parallel with the voltage source:

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To increase the resistance of the circuit

To decrease the resistance of the circuit

To provide each appliance the same voltage as the power source

To provide each appliance the same current as the power source

The frequency of silent whistle is:

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20,000 Hz – 25000Hz

2000 Hz – 2500Hz

200 KHz – 2000 Hz

25000 KHz

The number of wavelength of waves passing through a point in one secnd is called:

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Time period

Cycle

Frequency

None of these

Speed of light in air is ms^-1

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3 x 10⁸

3 x 10¹¹

3 x 10⁵

340

The number of neutrons in the nucleus of tritium is:

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1

2

3

4

an electrolytic capacitor is used to store large amounts of charge at:

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low voltage

high voltage

neutral

positive

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