Question # 1

Amorphous solids are also called

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Crystalline solids

Glassy solide

super conductors

Polymeric solids

Which onw of the following is deflected by an electric field.

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Alpha particles

Gama rays

Neutrons

x rays

Where is the velocity of electrons maximum in a diode.

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Near the cathode

Near the anode

In the space ini between the two elecrode.

It is same throughout the tube

Super conductor are used in

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Fast computer chips

Magnetic resonance imaging

Magnetic levitation trains

All of the above

The internal resistance of a primary cell depends upon the.

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Current dawn form the cell

Concentration of the solution

distance between cell electrodes

All of the above

If the current in a wire which is placed perpendicular to a magnetic fields increases the force on the wire.

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Increases

Decreases

Remain the same

Will be zero

Which law states that magnetization is inversely proportional to temperature for a fixed value fo the field.

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Curie's law

Voltmeter

Ammeter

Wattmeter

Which material has the larges resistivity.

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Silver

Germinium

Amber

Sulphur

A gallium atom is.

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Monvalent

Diavalent

Trivalent

Pentavalent

The device in the circuit that consume electrical energy are known as.

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Resistors

Capacitors

Fuses

Load

When a charged particle is moved through a magnetic field if suffers is change in its.

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Charge

energy

Mass

direction of motion

Which one of the following materials has negative temperature coefficient.

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Conductors

Semiconductors

Insulators

Covalent bonds

The permeability of air is

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0.5

zero

infinity

Unity

The cathode ray oscilloscope is used for

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Displaying the waveform of given voltage

Displaying the wave form of given vibrations

Rectifying a.c to d.c.

Rectifying D.C. to A.C.

The current passing through the coil of a galvanometer is directly proportional to

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Resistance

voltage

Angle of deflection

conductance

Thermocouple is combination of.

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Thermocouples

Capacitors in parallel

Resistors in series

Ammeter and voltmeter

The magnitude of induced emf during electromagnetic induction is controlled by.

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Magnetic flux

electric flux

Electric field

Magnetic field

A vacuum diode conducts when plate

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Is negative w.r.t cathode

Is positive w.r.t. cathode

and cathode are at the same potential

Resistance is less

What happens to the intensity or the brightness of the lamps connected in series as more and more lamps are added.

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Increases

Decreases

Remains the same

Cannot be predicted

At which temperature a ferromagnetic material is converted into a paramagnetic one.

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curie temperature

Boyle's temperature

Natural temperature

Neutral temperaturre

Materials that experience a force from stronger to weaker regions of magnetic field are called.

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Non magnetic

Paramagnetic

Ferromagnetic

Diamagnetic

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