Question # 1

The resistance of voltmeter is:

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zero

low

Very high

10Ω

The refractive index of internal coating of optical fibre is:

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1.56

1.51

1.53

1.58

Release of the energy by the sun is due to:

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Nuclear Fussion

Nuclear Fission

Burning of gases

Chemical reaction

When resistance are connected in series the current passing through them is .

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Different

Zero

The same

None of these

The electric potential energy per unit charge is called:

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Electric field

Electric potential

Electric intensity

All of above

The water waves obey the laws of:

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Reflection

Refraction

Diffraction

All of these

Level of noise recommended in eight, hour work day:

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80-90 dB

80-85- dB

85-90 dB

90-95 dB

The brain of any computer system is:

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CUP

Monitor

Memory

C.U

The displacement produced in the spring is directly proportional to force is called:

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Hook’s law

Boyle’s law

Newton’s law

Joule’s law

Changing magnetic field in a closed circuit can induce:

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e.m.f

Electric current

Force

Both A and B

When the object is placed beyond 2F of a convex lens, the image formed will be:

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Real, inverted and smaller than the object

Real, inverted and of the same size as the object

Real, inverted and larger in size than the object

Virtual, erect and larger in size than the object

Which is not a hardware device?

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CPU

Windows

Keyboard

Mouse

The sound level of rustling of leave is:

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1 dB

20 dB

30 dB

10 dB

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