Question # 1

At any point on the right bisector of the line joining two equal and opposite charges

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At electric field is zero

The electric potential is zero

The electric potential decreases with increasing distance from the centre

The electric field is perpendicular to the line joining the charges

Distance to nearest galaxy from earth is

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10¹⁰m

10¹⁵m

10⁴⁰m

10³⁰m

The photocopying process is called:

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Geography

Sonography

Xerography

Zerography

None of these

The solids which has structure in-between order and disorder are called

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amorphous solids

polymeric solids

crystalline solids

all of them

A force of 5 n is acting Y-axis. Its component along X-axis is:

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7 N

5 N

Zero

10 N

The entity which measures the quantity of motion in a body is called

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force

energy

momentum

power

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

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very small energy

very large energy

frictional forces

acceleration due to gravity

Angular velocity is a:

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Scalar quantity

Vector quantity

Complex quantity

None of these

The consumption of energy by a 60 W bulb in 2 minutes is:

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2 watt-hour

120 watt-hour

30 watt-hour

None of these

Specific resistance of a wire depends upon

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Length

Cross-section area

Mass

None

If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of

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20 m

400 m

1440 m

2880 m

Which of the following is not a projectile?

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a bullet fired from a gun

a spaceship

a football in air

an artillery shell

Under a constant torque,the angular momentum of a body changes from A to 4A second find the torque.

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(3/4)A

(1/4)A

3A

(4/3)A

A fibre optic communication system consists of

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one major component

two major components

three major components

four major components

As the Δt approaches to zero, the limit of ratio Δω/Δt becomes

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Average acceleration

Variable angular acceleration

Instantaneous angular acceleration instantaneous

None of these

The derived unit of pressure is

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kg/Ns

kgm²/s²

kg/m²s²

kg/ms²

Characteristics of optic fibre is/are

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Much thineer

Light weight

Extremely wide bandwidth

All of these

For a fixed force, larger is the mass of a body

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Greater acceleration

Small acceleration

Same acceleration

None of these

In multimode graded index fibre core and cladding has boundary

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Noticeable

No noticeable

No boundary

None of these

An electric field can deflect

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Neutrons

X-Rays

γ-Rays

α-Rays

The oil drop gets charged when it

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Pass through the medium

Pass through the atomizer

Light falls on it

All of them

Base quantities are

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Scalars

Vectors

Both

None of these

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