Question # 1

At ordinary temperature, an increase in temperature increases the conductivity of

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Conductor

Semiconductor

Insulator

Alloy

A traveling wave has a shape of:

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Square wave

Sine wave

Parabola

hyperbola

Static electricity is produced by the transfer of:

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Electrons

Protons

One fluid

Two fluids

None of these

Referring to the above figure, we can say that of all the elements, the most stable element is

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Phosphours

Iron

uranium

Lithium

Bismuth

The number of input terminals of an op-amp is:

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One

Two

Three

Four

None of these

An important part of inkjet printer is:

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Toner

Drum

Deflection plates

Heated roles

None of these

the dilation of time applies to the timing processes which are:

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Physical

Chemical

Biological

All of these

None of these

The current produced by moving a loop of wire across a magnetic field is called:

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Direct current

Magnetic current

Alternating current

Induced current

None of these

A body of mass 0.031 kg attached to one end of a spring of spring constant 0.3 N/m, then time period of spring mass system will be:

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1.5 sec

2.0 sec

2.3 sec

2.5 sec

A particle moving uniformly along circle its projection along diameter performs

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Linear motion

Projectile motion

SHM

Rotatory motion

If there identical strings each of constant K are hooked together the spring constant of resultant spring will be:

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3 K

2 K

K/4

K/3

The unit of inductance is equivalent to

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∨xs/A

∨xA/s

∨ x s/v

∨/A x s

If the dot product of two non-zero vectors vanishes,the vectors will be

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In the same direction

Opposite to each other

Perpendicular to each other

Zero

In deformation of the material, the potential energy of the molecules due to displacement from their mean positions is

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Lost

Gained

No lost no gain

None of these

Metals are good conductors of electricity and their conductivities are of the order of

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10³(Ω m)^-1

10⁴(Ω m)^-1

10⁶(Ω m)^-1

10⁷(Ω m)^-1

If L and R denote inductance and resistance respectively.then the dimensional formula of L/R is:

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(M°L°T°)

M°L°T°

(M²L^°T²)

(MLT²)

The sky appears blue because

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Red light is absorbed

Blue light is scattered the most

Blue light is absorbed

It is its natural color

When an atom is surrounded by large number of atoms their the energy levels are

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Distinct

Very close

Energy band

None of these

The charged nucleus of an atom itself spins its magnetic field is

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Equal to the field produced by orbital electrons

Greater than the field produced by orbital electrons

Much weaker than the field produced by orbital electrons

Very strong

If the mass of the body is M on the earth surface, then the mass of the same body on the moon

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M/6

Zero

M

None of these

The work done in taking a charge q once round a circle of radius r and having a charge Q at the centre is

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qQ/4πε_°r²

qQ/(4πε_°r)

qQ/[4πε_°](2πr)

Equal

The pressure will be low where the speed of the fluid is

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Zero

High

Low

Constant

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