Question # 1

The arrangement or molecules or atoms in a crystalline solid can be studied by using:

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Chemical methods

Neutrons

X-ray techniques

Copper atoms

Both (A) and (B)

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

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0.05 m

0.08 m

0.8 m

0.008 m

Under the elastic region, the deformation produced in the material, the deformation produced in the material will be

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permanent

temporary

either of them

none of them

The energy is found from Einstein's mass energy relation is called

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binding energy of electron

binding energy of proton

binding energy of neutron

binding energy of nucleus

Second's pendulum is the pendulum whose time period is:

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1 second

2 second

3 second

None of these

A body of mass 0.031 kg attached to one end of a spring of spring constant 0.3 N/m, then time period of spring mass system will be:

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1.5 sec

2.0 sec

2.3 sec

2.5 sec

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

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longitudinal waves

transverse waves

non-mechanical waves

none of them

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

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved

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1.92 N

19.2 N

12 N

0.192 N

The bonding between the semi-conductor materials is

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covalent

ionic

either of them

none of them

By CAT scans, we can detect the density difference of the order of:

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1%

20%

30%

50%

70%

Capacitor is a device use to store the

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A.C. current

D.C. current

Charge

Voltage

1 torr = --------------------

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1.20 Nm^-2

1.38 Nm^-2

1.33 Nm^-2

1.31 Nm^-2

The fractional change in volume per unit increase is pressure in called:

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Pressure coefficient

Volume coefficient

Bulk modulus

Compressibitlity

Michelesion's interferometer is an instrument usually used to measure

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intensity of light

speed of light

wavelength of light

dispersion of light

When a radioactive nucleus remits a beta particle, the proton neutron ratio:

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Decreases

Increases

Remain same

None of the above

In which of the following, Doppler’s effect is not applicable?

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To find speed of satellite

To find objects under water

To find speed of star

To tune a musical instrument

If speed of electron is 5 x 10⁵ m/s.How long does it take one electron to traverse 1 m?

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1 x 10⁶ s

2 x 10⁶ s

2 x 10⁵ s

1 x 10⁵ s

The force which maintains the strict long-range order between atoms of a crystalline solid is the:

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Nuclear force

Cohesive force

Adhesive force

Coulomb force

None of these

The gravitational pull of earth on a mass of 20 kg on the surface of earth is

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20 N

196 N

19.6 N

1960 N

High temperature water with pressure, come to the surface as

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Hot springs

Geysers

Steam vents

All of these

If the water exists from the pipe at the rate 1.5 kgs^-1 at speed of 0.3 ms^-1. If the water strikes a wall normally, find the force on the wall is

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5.53 N

5.03 N

1.35 N

0.45 N

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