Question # 1

Astrophysics is a branch of physics, which deals with:

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Sub-atomic particles

Stars and galaxies

Light and sound

Music

If the stress increased beyond the elastic limit of the material. the deformation produced in the material will be

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permanent

temporary

either of them

none of them

The SI unit of electric field intensity is

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CN^-1

NC^-1or Vm^-1

JC^-1

AV^-1

At 'resonance' the transfer of energy from deriving source to the oscillator is

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maximum

minimum

zero

none of them

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

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deformation

stretching

compressing

elasticity

Relativistic mechanics is a branch of physics, which deal with the bodies moving with velocities:

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More then c

Approaching c

Equal to c

Much less than x

The body will move with terminal velocity when it acquires

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minimum speed

zero speed

maximum speed

none of them

Magnetic induction is also called as:

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Ampere’s law

Faraday’s law

Lenz’s law

Newton’s law

Coulomb’s law

In frequency modulation (FM), the carrier waves amplitude

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Remains constant

Increase

Decreases

None of these

The efficiency of petrol engine is usually not more than 25% to 30% because of

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friction

heat losses

both of them

none of them

The stopping voltage for a certain metal is 100 volts, then the work function for the cathode plate is

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100 J

1.6 x 10^-17J

100 eV

1.6 x 10^-17eV

All real heat engines are less efficient than carnot engine due to

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Work substances

Friction

0 K

All of these

Blood has a density

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Equal to water

Greater then water

Lesser then water

None of these

Paramagnetic substances are those in which

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Spin and orbital motions are supported

Spin and orbital motions are opposed

Spin and orbital motions supported a little

None of these

Crystalline solids are in the form of:

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Metals

Ionic compounds

Ceramics

Both A and B

All of these

Polymers have chemically combinations with

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Carbon

Nitrogen

Hydrogen

All of them

if volume of a sphere increases then terminal velocity

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Remains same

Increases

Decreases

None

The typical wavelength of light source in transmitter is

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1.1 μm

1.2 μm

1.3 μm

1.4 μm

The instrument used to gather information from the far side of the Universe is

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Compound microscope

Radio telescope

Astronomical Telescope

Simple mircroscope

Some charge is being given to a conductor.Then its potential

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Is maximum at surface

Is maximum at centre

Is remain same throughout the conductor

Is maximum somewhere between surface and centre

The field of a long bar magnet is like a

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Two pole pieces of magnet

Solenoid

Toroid

None of these

Velocity of a body changes if

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direction of motion the body changes

speed of the body changes

neither speed nor direction changes

either speed or direction changes

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