Question # 1

The base unit of temperature in SI is

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Fahrenheit

Celsius

Kelvin

Rnakine

Which material has the highest magnetic susceptibility.

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Steel

Brass

Iron

Wood

The normal adjustment the magnifying power of an astronomical telescope is.

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fe/fo

fo/fe

fo+ fe

fo -fe

When two point charges of equal magnitude and opposite sign exist very close to one another the arrangement is called.

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An electric dipole

An amperian current

A null charge

A neutral source

The unit of electrochemical potential is.

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J mol-1

volt

J C-1

Mol J-1

Wave length of a LASER can be sued as a standard of.

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Angle

Time

Length

Temperature

The number 0.02 x 10^-8in standard form will be written as.

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2 x 10^-10

2 x 10^-8

20 x 10^-8

20 x 10^-6

In a stationary wave the particle velocity at the node is

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Zero

Constant

Minimum

Maximum

In a R-L-C series circuit, when the frequency of A.C. source is high the circuit is.

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R-L Circuit

R-C circuit

L-C circuit

R-L or R-C

When light emitting diode is forward biased, it emits light of the colour

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Red

Yellow

Green

All of these

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

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Lesser

Greater

Equal

Undetermined

Which base units would be needed to express the SI unit of potential difference.

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Kg and A only

m , s and A

kg, m, s and A

mg, m and s

Low frequency response of an amplifier is mainly limited by.

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Biasing configuration

Coupling capacitor

By pass capacitor

Input impedance

In de Brogile model electron orbit must form

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Spectrum

Wave packets

Franhoffer lines

Clouds

The phase angle between the voltage and current is A.C. circuit though a resistor is.

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0 ^o

45 ^o

90 ^o

180 ^o

The specific heat capacity of the body depends upon.

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the heat given to it

Mass of the body

Temperature raised

Material of the body

Which of the following characteristics of a wave is independent of the others.

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speed

Frequency

Amplitude

Wavelength

An AND gate is.

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Equivalent to a series switching circuit.

Equivalent to a parallel switching circuit

Equivalent ot universal gate

A reciprocal of NAND gate

An oscillator is basically an amplifier with loop gain

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Zero

Less than unity

More than unity

Infinity

An A.C. dynamo operates on the principle of

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Mutual induction

Self induction

Electromagnetic induction

Mechanical induction

The length of an astronimical telescope for normal vision is.

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fo x fe

fe/fe

fo - fe

fo + fe

Interference effects of light were verified by

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Thomas Young

Newton

Bragg

Huygen

An object gain excess negative charge after being rubbed against another object which is.

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Neutral

Negatively charged

Positively charged

either a, b, or c

Which of the following circuits is used as local oscillator in radio receivers.

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AF oscillator

Phase Local Loop

RF oscillator

All of the above

For a prism of particular and given wavelength the resolving power varies as

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First power of lens of its base

Square of inverse length of its base

Increases of length of its base

Cube of the length of its base

The erecting lens of a telescope produces

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A shorter instrument

wider field of view

A larger image

A sharp image

What is the magnifying power of a convex lens of focal length 5 cm.

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3

5

6

20

Where should be the centre of gravity of a body.

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It must be within the body

It must be outside the body

It may be near but not essentially within the body

It changes its position after sometime

Which of the following measures how quickly the thermometer liquid mainly because it

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Is coloriess

Is a bad conductor of heat

Does not expand linearly

Has a low boiling point

On which parameter the path difference between two interfering waves depends upon.

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Amplitude

Pitch

Intensity

Phase angle

The dot product of electric intensity and area of a surface is equal to.

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Magnetic flux

Electric flux

Motional emf

Induced emf

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