Question # 1

If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be

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turbulent

streamline

abrupt

none of them

A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:

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10 m

12 m

13 m

15 m

The locus of all the points in the same phase of vibration is called:

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Wave packet

Wave front

Wave number

None of them

The dot product of electric field intensity E and vector area A is called

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Electric potential

Electric flux

Electric field

Magnetic field

One radian is equal to:

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30.3°

45.3°

50.3°

57.3°

The fluid which is incompressible and non viscous is called

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Ideal fluid

Non-ideal fluid

Prefect fluid

All

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

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nuclear fission

nuclear fusion

man defect

radioactivity

The quantity F x t is called as

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momentum

velocity

acceleration

impulse

Micheal Faraday and joseph Henry belong respectively to:

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USA and England

England and France

England and USA

USA and France

None of these

The restoring force is ______ and opposite tot he applied force within ______

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Equal, Elastic limit

Different, The walls of the laboratory

Different, Elastic limit

None of these

The driection of vector si space is specified by:

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One angle

Two angles

Three angles

None of above

The solids are classified as:

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Metals

Crystalline

Amorphous

Polymeric

All expect A

A particular wavelength received from a galaxy is measured on earth and isfound to be 5% more than that its wave length on earth. Hence galaxy is

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Moving towards earth

Going away from earth

Stationary with respect to earth

None

When a plane polarized light is passed through certain crystals they

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Are totally absorbed

Are totally reflected

Rotate the plane of polarization

None of these

The ability of the body to return to its original shape is called

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deformation

stretching

compressing

elasticity

Solid angle is

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Two dimensional angle

Three dimensional angle

One dimensional angle

Multi-dimensional angle

Substance which break just after the elastic limit is crossed are called

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Soft subtances

Hard substances

Brittle substances

Ductile substances

Huygen principle is used to determine:

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Speed of light

Location of wavefront

About polarized and unpolarized light

None of them

When two lights waves travelling in the same direction are in phase at any point, they producing

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constructive interference

destructive interference

dispersion

polarization

The dimensions of Einsteins Equation E = mc²

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[ML^-2]

[ML²T^-2]

[M²LT²]

[MLT^-1]

Which characteristics of wave, established the Huygen's wave theory in 1801?

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polarization

interference

propagation

all of them

A typical rocket ejects the burnt gases at speeds of over

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4000 ms^-1

5000 ms^-1

6000 ms^-1

None of these

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