Question # 1

The part of waves at which particles of the medium are below the normal position are called:

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Extreme positon

Crest

Trough

None of these

A normal eye can see near objects clearly at a distance of:

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20 cm

25 cm

30 cm

35 cm

The value or current I passing through a conductor is inversely proportional to:

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Temperature

Potential difference

e.m.f.

resistance

CD which is made of soft material is called:

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Hard disk

Floppy disk

Iron disk

Copper disk

If the distance is nspring is 'x' of mass 'm' attached with a spring then restoring force is:

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F =ma

F =kx

F = mx

F= m/a

The distance between two consecutive troughs or crests is called:

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wavelength

Frequency

Time period

None of these

A dielectric must be:

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Resistor

Insulator

Good conductor

Semi conductor

Bouncing back of light after striking the surface is called:

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Refraction

Reflection

Diffraction

Interference

Those quantities whose values do not remain constant are called:

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physical quantities

Digital quantites

Log quantities

Analog quantities

Nichrome wire is an alloy of:

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Lead and zinc

Silver and copper

Nickel and chromium

Iron and copper

Human skin, in dry conditions, has a resistance of:

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20,000 ohm

100,000 ohm

30,000 ohm

2000 ohm

In compound microscope, the objective have focal length than eye-piece:

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Smaller

Larger

Equal

Equal and larger

In D.C.motor split rings are made of:

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Steel

Carbon

Copper

Iron

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