Question # 1

Which types of image is formed by a concave lens on a screen?

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Inverted and real

Inverted and virtual

upright and real

Upright and virtual

The half -life of carbon is

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5730 years

5700 years

5720 years

572 years

The index of refraction depends on:

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The focal length

The speed of light

the image distance

The object distance

1 nano farad is equal to:

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1 x 10^-12 F

1 x 10⁹F

1 x 10^-9F

1 x 10^-6F

The unit of spring constnat is:

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m

kg

Nm²

Nm^-1

The data stored in C.D. is.

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680 MB

650 MB

700 MB

750 MB

Electronics is a branch of:

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Mass

Applied Physics

Mechanics

Nuclear Physics

1 MB =

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1022KB

1023KB

1024KB

1025KB

Waves transfer:

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Energy

Wavelength

Velocity

frequency

The device which is used to convert sound waves into electrical signal is called:

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Ear piece

Microphone

Transmission channel

Receiver

The symbol of atomic mass number is:

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A

X

N

Z

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

Which is the most suitable means of reliable continuous communication between an orbiting satellite and Earth?

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Microwaves

Radio waves

Sound wave

any light waves

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