Question # 1

Electric field lines were introduced by:

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Faraday

Newton

Coulomb

Joule

The water waves obey the laws of:

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Reflection

Refraction

Diffraction

All of these

Which is the most suitable means of reliable continuous communication between an orbiting satellite and earth:

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Mecrowaves

Radio waves

Sound waves

Any light waves

The half life of Lead Pb is

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10 hour

10.10 hours

10.6 hours

1 year

Which element is used for the monitoring of thyroid glands?

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Iodine- 131

Phosphorus-32

Carbon-14

Potassium-40

1 KB =______________

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1022 bytes

1023 bytes

1024 bytes

1025 bytes

The diameter of spherical mirror is called:

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Curvature

Aperture

Sphere

Both a and b

Which of the following is an insulator:

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Copper

Iron

Silk

Silver

Which of the following tasks are performed by most of the algorithms?

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Input

Out put

Processing

All of these

The speed of sound in iron at 25°C is:

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5950 m/sec

5900 m/sec

6950 m/sec

6940 m/sec

The speed of sound in air at 100°C is:

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380ms-1

382ms-1

386ms-1

300ms-1

The Half life of a certain isotopes is 1 day. What is the quantity of isotopes after 2 days?

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One half

One quarter

One eight

None of these

What does a switch do:

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Oppose the current

Open and close the circuit

Store energy

Provide voltage

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