Question # 1

Those quantities which can be measured accurately are known as

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Physical Quantities

Scalar Quantities

Vector Quantities

Non Physical Quantities

A curie represents a very strong source of

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α-particle

β-particle

γ-particle

none of these

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

The phenomenon of generation of induced emf is called

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Electrostatic induction

Magnetic induction

Electromagnetic induction

Electric induction

Both (A) and (D)

When velocity of moving body is doubled, the quantity which is also doubled is its:

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K.E.

Acceleration

Momentum

P.E.

The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:

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Wien's constant

Stefen's constnat

Planck's constant

Boltzmann's constant

None of these

For transmission of both transverse and longitudinal waves, we can use:

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Solid

Gas

Plasma

None of these

In transverse waves, the individual particles of the medium move:

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In circles

Perpendicular to the direction of level

Parallel to the direction of level

None of these

The natural frequency of a pendulum which is vibrating freely, depends upon its

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mass

length

material

all of them

A person starts his journey from a point 0, travels 4 Km SW, then 4 Km NW, and finally 4 Km north-east. At what distance is he now from point 0?

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0 Km

4 Km

8 Km

12 Km

Which of the following does not exhibit S.H.M?

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a plucked violin string

a mass attached to a spring

a train shunting between two terminals

a simple pendulum

A telescope is rotatable about the same vertical axis as the turntable, with a scale which is

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Main scale

Vernier scale

Half degree scale

None of these

Proportion of light in an optical fibre requires that the light-should be within the fibre

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Very little confined

Largely confined

Totally confined

None of these

__________ does not have linear strain

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Water

Copper

Aluminum

Iron

At systolic pressure, at the point the first surges of blood flow through the narrow stricture produces

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High flow speed

Sound heard

Initially turbulent

All of these

When the body is at rest the relation

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W - T = ma

T - W = ma

T = W

None of these

According to Huygen's principle:

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Light travel in straight line

Light is a transvers wave

Light has dual nature

All point on the primary wavefront are the sources of secondary wavelets

Which of the following colors will have minimum critical angle when light passes from glass to air

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Red

Blue

yellow

Orange

To get three images of a single object,one should have two plane mirrors at an angle of

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90°

120°

30°

160°

Fight of rocket in the space is an example of

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Newton's first law

Newton's third law

Newton's second law

all of them

In photoelectric effect, electrons are emitted with:

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Same energy

Different energies

Both (a) & (b)

Intermittent energies

An Earth satellite in a circular orbit of 384000 km. What is its velocity in that orbit take me = 6.0 × 1024 Kv R_e = 64000 km

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2.57 kms^-1

1.1 kms^-1

1.01 kms^-1

1.07 kms^-1

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