Question # 1

The value of the metastable state for Neon is

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20.66eV

20.61eV

19.23eV

18.70eV

The greatest stress that a material can endure without losing the proportionality between stress and strain is called

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plastic line

breaking point

proportional limit

none of them

The force which opposes the applied force producing the displacement in the spring is called

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restoring force

periodic force

centripetal force

resistive force

The work performed on an object does not depend on:

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Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

Static electricity is produced by the transfer of:

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Electrons

Protons

One fluid

Two fluid

None of these

In free space, the speed of electromagnetic waves is

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3 x 10⁸ms^-1

3 x 10⁶ms^-1

4 x 10⁷ms^-1

3 x 10⁹ms^-1

A process in which no heat enters or leaves the system is called

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isochoric process

isothermal process

adiabatic process

none of them

Laser is a beam of:

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Visible light

Infra red light

Ultra violet light

Violet light only

yellow light only

In the theory of dimensional analysis, heat may be properly represented by:

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ML²T^-2

MT^-2

ML^-1T^-1

None of these

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)

Units of impedance are

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Henry

Ohms

moh

Watt

Electric intensity inside a hollow sphere is

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Minimum

Maximum

q / c_o

Zero

Two equal an opposite forces acting along the same line of action will result in

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translational equilibrium only

rotational equilibrium only

translational as well as rotational equilibrium

neither translational nor rotational equilibrium

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor The capacitor of the capacitor:

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Increases

Decreases

Remains unchanged

Becomes infinite

A charged oil drop is suspended in a uniform field of 3 x 10⁴ V/m so that it neither falls nor rises.The charge on the drop will be (Mass of charge = 9.9 x 10^-15 kg and g = 10 m/s²)

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1.6 x 10^-18C

3.2 x 10^-18C

3.3 x 10^-18C

4.8 x 10^-18C

The irregular flown of fluid is called

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Normal flow

Streamline flow

Turbulent flow

None of these

A particle of mass 'm' at rest is acted upon by a force 'P' for a time 't' its kinetic energy after an interval 't' is

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P²t²/m

P²t²/2m

P²t²/3m

Pt/2m

Torque will be zero if

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body is at rest

rotating with uniform angular velocity

zero angular acceleration

all of them

The example of insulators are

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Copper

Nickel

Diamond

None of these

The decrease in potential energy of a ball of mass 20 kg which falls from a height 50 cm is:

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968 J

98 J

1980 J

None of these

Which of the following correctly states the base units of weight?

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N

N m s^-2

Kg m s^-1

Kg m s^-2

When torque acting upon a system is zero which of the following will be constant?

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Force

Linear momentum

Linear impluse

None of these

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