Question # 1

A resonance curve for RLC series circuit is a plot of frequency versus

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Voltage

Current

Impedance

Reactance

Amplitude is the displacement of the vibrating body from:

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One extreme position to the other extreme position

Mean position any one extreme position

Both A and B are correct

None of these

Velocity of particle executing SHM will be maximum at

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Extreme position

Mean position

b/w mean and extreme

None

The time interval during which the Voltage source changes its polarity once is known as:

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Time period T

Half the time period

Quarter the time period

Two third of the time period

None of these

The value for systolic blood pressure for a normal healthy person is

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140 torr

80 torr

90 torr

120 torr

The word amorphous means:

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Without any structure

With definite structure

Regular arrangement of molecules

Both (B) and (C)

None of these

Velocity of a body changes if

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direction of the body changes

speed of the body changes

neither speed nor direction changes

either speed or direction changes

In a voltmeter the conduction takes place due to

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Electrons only

Holes only

Electrons and holes

Electrons and ions

The first super conductor was discovered in

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1811

1890

1901

1911

The range of wavelengths of colurs in the visible colours is

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140 nm to 456 nm

10 nm to 56 nm

410 nm to 656 nm

910 nm to 956 nm

None of these

The induced current in the loop can be increased by:

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Using a stronger magnetic field

Moving the loop faster

Replacing the loop by a coil of many turns

All above

Both (A) and (B)

The dot product of electric field intensity E and vector area A is called

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Electric potential

Electric flux

Electric field

Magnetic field

The doped semi-conductors materials are known as

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intrinsic semi-conductor

extrinsic semi-conductor

either of them

none of them

The limit below which the Hooke s law holds well is called

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Yield point

Breaking stress

Tensile strength

Elastic limit

Dolphins have bodies to assist their movement in water are

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Irregular bodies

Closer to streamline body

Stream lined bodies

None of these

If plane polarized light is incident on the second sheet of Polaroid, the light emitted is full light when their axes are

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Parallel to each other

Perpendicular to each other

In between two positions

None of these

If the error in the measurement of radius of a sphere is 1% then the error in the measurement of volume will be

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1.1%

3%

5%

8%

There is a certain frequency below which no electrons are emitted from the metal surface, this frequency is known as:

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Critical frequency

Threshold frequency

Maximum frequency

Minimum frequency

Above a certain velocity the fluid flow, the motion of the fluid becomes

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Steady

Unsteady

Irregular

b and c

Random error occurs when repeated measurements of the quantity under the same conditions gives

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Equal values

Different values

Increasing values

None of these

The correct statement about poissons ratio is

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Its unit is N/m²

It is dimensionless

Its unit is Newton

Its dimensions MLT²

In thrill machine rides at amusement parks, there can be an acceleration of

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2 g

3 g

More than 3 g

4 g

Multi-mode step index fibre index fibre is used to send

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white light

green light

a strong monochromatic light

yellow light

Stoke's law holds for bodies of the shape

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Spherical

Rectangular

Oblog

All of these

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