Question # 1

In a parallel resonant circuit, at resonance

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Current is maximum

Voltage is maximum

Impedance is minimum

Impedance is zero

Davision and Germer got Nobel prize for their work on

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The dual nature of particles

The wave nature of particles

The corpuscular nature of particles

All of the above

Gauss's law a most useful in cases where the charge distributions.

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Are made up of discrete point charges

Are finite in their spatial extent

Give rise to inverse square law fields

Posses a certain amount of symmetry

Which term best describes the nature of light from modern view point.

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Waves

Rays

Particles

Photons

The unit of magnetic induction is.

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weber -metre

weber -metre 2

weber-meter-2

weber-metre-1

The power of convex lens of focal length 50 cm will be

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1,0 dioptre

2.0 dioptre

4.0 dioptre

5.0 dioptre

Absolute P.E. of a body can be calculated

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At centre of the earth

Below centre of the earth

From surface of the earth

Below surface of the earth

A charged capacitor has charge on its

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Outside surface

Inner surface

Surroundings

Mid point

The specific heat of all gases increases with temperature at high temperature decreases at low temperature expectation is

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Oxygen gas

Nitrogen gas

Mono atomic gas

Dia atomic gas

The phenomenon of polarization is done by

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Selective absorption

Scattering of light

Refraction of light

Dispersion of light

Which of the following scientists is known for his exceptional work in the field of optics.

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Albert Einstein

Issac Newton

Ibn al Haithem

Alberuni

Which one of the following is a neutron absorber

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Pb

Cd

Cu

Ag

Which particle are not emitted by a radioactive substance.

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Alpha particles

Beta particles

Gama particles

Neutrons

if temperature eon Celsius scale is 50 oC the temperature on Fahrenheit scale will be.

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102 ^oF

108 ^oF

112 ^oF

122 ^oF

The law of inertia was first time formulated by

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Galileo

Newton

Kepler

Planck

At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.

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0.3 v

0.5 V

0.7 V

0.9 V

Lenz's presented his law is

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1826

1829

1834

1839

Molecules of a liquid

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Do not vibrate about their mean position

Are rigidly held with each other

Have weak attractive forces

Have strong attractive forces

Artificial polymers are made by a chemicals reaction known as.

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Crystallization

Electroplating

Polymerization

Polarization

The force that moves a rocket or a plane forward is called.

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Lift

drag

Thrust

Turbulence

A system of the equal and opposite point charges separated by a small distance is called.

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A capacitor

A dipole

An iinductor

A di electric

Venturimeter is a device used to measure

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Density of a fluid

Speed of a fluid

Pressure of a fluid

Viscosity of a fluid

For total internal reflection the light rays enter

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From rarer to denser medium

From, denser to rarer medium

Medium of same refractive index

At an angle 90 ^o

The are between the velocity time graph and the time axis is numerically equal to.

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Distance moved by the object

Speed of the object

Velocity of the object

Acceleration of the object

when a body accelerates.

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Its direction always changes

Its mass always changes

Its velocity always changes

It falls towards the earth

Which one the following is not a component of a Bipolar junction Transistor

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Base

Emitter

Collector

Grid

Which mirror be used for obtaining a parallel beam of light from a small lamp.

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Plane mirror

Convex mirror

Concave mirror

All of these

If a resistance is connected in parallel with a galvanometer the resulting instrument is called.

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A voltmeter

An ammeter

A wattmeter

A potentiometer

A fluid is said to be ideal if it is

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Non viscous

Non viscous and incompressible

Non viscous and with steady flow

Non viscous incompressible and has steady flow

The electric supply line in houses works at 220 V what will be the amplitude of emf.

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120 V

331 V

220 V

440 V

What is the traditional name for a capacitor

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Choke

Condenser

Transformer

Inductor

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