Question # 1

Solids have

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Fixed shape only

Fixed volume only

Fixed shape and volume

No fixed shape and volume

If two gases have same reduced pressure volume and temperature it is according to

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Boyle's law

Charles law

Law of corresponding state

Zeroth law

Which one of the following has maximum frequency.

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Visible light

Gama rays

Ultraviolet rays

Infrared rays

In electronegative waves the electric and magnetic fields are.

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Parallel to each other

Perpendicular to each other

antiparallel to each other

At an angle of 45 ^o to each other

What is the effect of electric and magnetic fields on X-rays

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X-rays are deflected

X-rays are not deflected

X-rays are sometimes deflected and sometimes not

Nothing can be said

Cosmic rays mostly comprise of

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Neutral particles

Negative charged particles

Positively charged particles

Ions

For which process is the relation Delta Q = Delta V true.

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Isothermal

Adiabatic

isobaric

Isochoric

In a series resonant circuit, the current at resonance is.

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Maximum

Minimum

Zero

Sometimes maximum and sometimes minimum

According to Max. Planck, energy is released or absorbed in discrete packets called.

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quanta

Meson

Energy shells

Position

X-rays spectrum may be

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Continuous spectrum

Discontinuous spectrum

Line spectrum

Continuous and line spectrum

Why does a glass plate inside a colorless liquid become invisible

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The colours of both are same

The densities of both are same

Their refractive indices are same

Their refractive indices are different

A capacitor is prefect insulator for

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Direct current

Alternating current

Direct as well as alternating current

Pulsating current

Polaroid's were invented in

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1787

1887

1897

1929

A wire of 5 m length carries a steady current if the field inside it is 0.2 v m-1 then the potential difference will be.

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0.1 V

0.5 V

1 V

5 V

When a man jumps off the ground, the reaction force of the ground is.

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Equal to the weight of the man.

Smaller than the weight of the man

Greater than the weight of the man

Zero

In heavy elements of the periodic table the number of neutrons than protons are.

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Lesser

Greater

Equal

Undetermined

Radioactivity is the phenomenon associated with the.

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Transition of radiowaves

production of alpha particles only

Decay of nucleus

Reception of radio waves

Which one of the following is not a dimensionless quantity.

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Radian

pi

Decibel

Force

A wave that consists of oscillations occurring perpendicular to the direction of energy transfer is called.

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Transvers wave

Longitudinal wave

Stationary wave

Shock wave

A liquid surface tend to contract this phenomenon is due to

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Viscosity

Diffusion

Density

surface tension

In which of the following studies x-rays are not helpful.

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Crystal structure

Crystal surface

Crystal symmetry

Crystal atoms

The specific heat of an ideal gas values as

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To

T1

T2

T3

Two light waves which are not coherent cannot produce.

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Interference

Diffraction

Reflection

Dispersion

In a simple D.C. motor the direction of current in the motor is reversed every half revolution to keep the motor turning in the same direction which part of the motor does this.

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Brushes

Coil

Commutator

Poles

The air plane lift is based on

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Archimedes principle

Law of conservation of momentum

Bernoulli's principle

Law of conservation of energy

The half life of a radioactive substance is 6 years What is the time taken by 12 g of this substance to decay completely.

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12 years

24 years

48 years

infinity

Which of the following is nearly monochromatic

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Light from sodium lamp

Light from candle

Light from gas lamp

Light from sun

LED is a p-n junction that emits

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Visible light

X- rays

Ultraviolet light

electromagnetic waves

The moment of linear momentum is equal to

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Implies

Torque

Angular momentum

Couple

Capacitance is define das

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VC

Q/V

QV

V/Q

The period of a geostationary satellite is.

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32 hours

72 hours

48 hours

96 hours

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