Question # 1

A field is uniform and much stronger:

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Inside a long solenoid

Outside a long solenoid

At the end of a long solenoid

At the central point of long solenoid

None of these

Conventionally, all the distance p, q, f are measured from _____ of the lens:

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Focus

Optical center

Edges

None of these

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

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longitudinal waves

transverse waves

non-mechanical waves

none of them

An axis of rotation

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Is a straight line

Is normal to the plane of rotation

Passes through pivot point O

All of them

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

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0.05 m

0.08 m

0.8 m

0.008 m

In describing functions of digital systems, a closed switch will be shown as

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0

1

low

any one of these

The total reactance of a series RLC circuit at resonance is

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zero

Equal to the resistance

Infinity

Capacitive

An ideal choke (used along with fluorescent tube) would be

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A pure resistor

A pure capacitor

A pure inductor

A combination of an inductor and a capacitor

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved

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1.92 N

19.2 N

12 N

0.192 N

The energy of photon 'E' is proported to

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The magnetic field H

The electric field E

Both the electric and magnetic field H and E

Frequency

The band above the valence band is called

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high energy band

conduction band

empty band

none of them

A constant volume gas thermometer works on

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Charles' law

Boyle's law

Pascal's law

None of these

The central point in the Newton's rings is dark due to

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Destructive interference

Constructive interference

Additional of path difference λ/2

b and c

A visual representation of an electric field in terms of an electric field lines was proposed by

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Coulomb

Faraday

Gauss

Lenz

The ratio of kinetic energy to potential energy for solids is

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What is the bulk modulus of a material?

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strain/volumetric strain

volumetric stress/strain

stress/volumetric strain

volumetric stress/volumetric strain

The relative permitivity ∈_r for rubber is

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2.8

3.0

2.90

2.94

A point charge Q is placed at the mid-point of a line joining two charges,4q and q. if the net force on charge q is zero,then Q must be equal to

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-q

+q

-2q

+4q

If we move from equator to pole,value of g

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Increases

Decreases

Remains same

First (A) and then (B)

A string vibrates in 1 loop has frequency 25 Hz if it moves in 2 loops its frequencywould be:

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25 Hz

50 Hz

12.5 Hz

5Hz

The escape velocity of Neptune in Kms^-1

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20.26

24.03

25.4

25.6

In projectile motion when a body is projected upward it must have

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Initial velocity

Angleθ<90°

Falling under gravity

All of these

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