Question # 1

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

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one ohm

one joule

one volt

one ampere

The value of current at resonance in series LCR circuit is affected by the value

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R only

C only

L only

R, C and L

Truth of kinetic energy is confirmed by:

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Diffusion of gases

Brownian motion

Both A and B

None of these

Static electricity is produced by the transfer of:

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Electrons

Protons

One fluid

Two fluid

None of these

Si units of time period is

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second

hertz

revolution

vibration/sec

As the current flows through the wire

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It generates heat in the wire

It produces sound in the wire

Resistance of the wire decrease

Voltage across the ends is the increase

None of these

The artillery shells travel along parabolic paths under the influence of

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magnetic field

electric field

electromagnetic field

gravitational field

When platinum wire is heated, it appears cherry red at

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1600°C

900°C

1100°C

1300°C

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

Light year is a unit of:

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Time

Distance

Velocity

Intensity of light

The energy of a photon is represented by

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h/c²

h/T

hc²

hf/c²

The combination of solenoid and a specimen of iron inside it make a power full magnet called

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Horse shoe magnet

Bar magnet

Electromagnet

10^-10 to 10¹⁸

Approximate power of an electric heater in watts

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2 × 10⁸

2 × 10⁵

2 × 10³

2.1 × 10⁴

The horizontal velocity component in projectile motion is

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Zero

Constant

Maximum

None of these

When the velocity of a body is increasing, the acceleration produced is

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No acceleration produced

Negative acceleration

Positive acceleration

None of these

The symbol K and G have been used to denote respectively:

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Young's modulus and bulk modulus

Young's modulus and shear modulus

Bulk modulus and shear modulus

Any of these

None of these

A gas STP is slowly compressed to one fourth of its original volume, then final pressure is

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4 atmosphere

0.75 atmosphere

8 atmosphere

0.25 atmosphere

We can use Fibre optics system for

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Image transmitting

Word processing

Image processing and recelving

All

The rightward forces acting on a body in equilibrium are taken as

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negative

positive

either negative or positive

none of them

The dimensions of torque are

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ML²T^-2

MLT²

MLT^-1

ML²T²

Angle between ray of light and the corresponding wavefront is:

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0°

60°

90°

120°

A person moves 30m north then 20m east then 30√2 m south west His displacement from the original position is

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14 m south west

28 m south

10 m west

15 m east

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