Question # 1

The basic circuit element in D.C. circuit is:

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A capacitor

A resistor

An inductor

Both (A) and (C)

Both (A) and (B)

The discuss used by athlete has a mass of 1 kg, its weight in newton is

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9.8 N

80 N

98 N

100 N

Rate of change of momentum is called

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Impulse

Force

Torque

Momentum

The unit of thermodynamical scale is

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centigrade

fahrenheit

kelvin

none of them

When some compass needles are placed on a card board along a circle with the center at the wire, they will

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Point the direction of N-S

Set themselves tangential to the circle

Point in the direction of E-W

None of these

Point in direction of S-E

The process of formation of spectrum is called:

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Interference

Spectroscopy

Dispersion

Reflection

Botha (A) and (D)

The velocity of falling raindrops attains limited value because of

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Up thrust of air

Air currents of the earth atmosphere

Surface tension effect

Viscous force exerted by air

Charge on neutron is

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1.6 x 10^-19C

zero

-1.6 x 10^-19C

1.2 x 10^-19C

The direction of lines of force depends upon the direction of

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voltage

current

charges

none of these

If a system undergoes a natural process it will go in the direction that causes the entropy of the system plus the environment to increase, this is another statement of

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second law thermodynamics

first law of thermodynamics

third law of thermodynamics

none of them

One coulomb per second is equal to

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One volt

One ampere

One hom

One henry

At the top of the trajectory of a projectile the directions of its velocity and acceleration are

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Perpendicular to each other

Parallel to each other

Inclined to each other at an angle of 45°

Antiparallel to each other

A thin film is a transparent medium whose thickness is comparable with the wavelength of

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light

sound

any one of them

none of them

Period of typical radio waves is

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1 × 10^-8 sec

1 × 10^-6 sec

1 × 10^-5 sec

The body moving with uniform velocity may be

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in equilibrium

accelerating

changing in direction

changing in magnitude

The property of bending of light around the obstacle is known is

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Interference

Polarization

Diffraction

None of these

The Plano-convex lens used in the Newton's rings are of focal length

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Small

Long

Very large

None of these

At what point/points in its path does a projectile have its maximum speed

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At the point of projection

At the point where its strikes the ground

Both

None of these

A highly irreversible process is

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Expansion

Explosion

Compression

None of these

In a full wave rectifier with input frequency 50Hz. The frequency of pulsating D)C) received as an output across the load is

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50 Hz

100 Hz

500 Hz

zero

Electrical activity of the retina the eye, generates which is used in electro ethnography as

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Current

Voltage

Resistance

None of these

Two resistances 4Ω and 6Ω are in series they are in parallel with a 10Ω resistance.The equivalent resistance is

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5Ω

8Ω

12Ω

20Ω

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