Question # 1

In case of an ideal gas, the P.E associated with its molecule is

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maximum

zero

minimum

not fixed

The chemical properties of all the isotopes of an elements are

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same

different

slightly different

none of these

The CRO is used for displaying the waveform of a given

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current

voltage

both of them

none of them

The law of electromagnetic induction is related to:

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Coulomb

Ampere

Faraday

Lenz

None of these

Photons must have energy equal to

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ev

En

hf

None of these

The counter, which also provides the power to the G.M. tube is called:

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Thin mica window

thin glass window

Airy window

Wooden window

None of these

Compton was awarded Nobel prize in physics in

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1921

1923

1925

1927

The entire wave form of sinusoidal voltage is actually a set of all the:

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Positive maximum value + V_oand negative maximum value -V_o

Posiotive maximum value +V_oand zero

Zero and negative maximum value -V_o

Any of these

None of these

Pair production is the phenomenon in which

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matter is converted into energy

energy is converted into matter

light is converted into electrical energy

electrical energy is converted into light

The force experienced by charged particle is maximum, if it moves

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parallel to magnetic field

perpendicular to magnetic field

opposite to the magnetic field

none of these

Aerodynamics is a branch of:

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Hydrodynamics

Thermodynamics

Both of them

Statics

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

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3 more neutrons

3 more electrons

3 more protons

3 more ions

The SI unit of magnetic induction is tesla which is equal to

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Newton/ampere-meter or N/A-m

Newton/ampere²-meter or N/A²-m

Newton/ampere²-meter² or N/A²-m²

Newton/ampere²-meter²or N/A²-m²

A swing has

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one natural frequency

two natural frequencies

three natural frequencies

four natural frequencies

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

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maximum speed

zero speed

maximum speed

none of them

Micheal Faraday and joseph Henry belong respectively to:

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USA and England

England and France

England and USA

USA and France

None of these

Work is a:

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Scalar quantity

Vector quantity

Base quantity

None of these

Which of the following is a characteristic of an ideal fluid?

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it is non-viscous

it is incompressible

it's motion is steady

all of the above

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

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Much more

Very small

No amount at all

None of these

Light year is a unit of:

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Time

Distance

Velocity

Intensity of light

The phenomenon of generation of induced emf is called:

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Electrostatic induced

Magnetic induced

Electromagnetic induced

Electric induced

Both A and C

When a shell explodes in mid-air, its fragments fly off in

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only one direction

in two direction

different directions

a particular direction

The value of LDR depends upon intensity of:

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Sound falling on it

Current passing through it

Magnetic field surrounding it

Light falling on it

Non of these

In frequency modulation (FM), the carrier waves amplitude

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Remains constant

Increase

Decreases

None of these

Unit of impulse in

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Newton

Kg m

Kg m/s

Joule

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

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6 ohm

4 ohm

zero ohm

1.33 ohm

A piece of wire along which charges are made to accelerate is known as

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transmitting antenna

receiving antenna

modulator

nor of these

The definite number of significant figures in 5000 is:

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Four

Three

Two

One

The phase angle of a series RLC circuit at resonance is

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180°

90°

0°

None of the these

When a conductor moved with its length parallel to the lines of magnetic fled:

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An emf is induced across its ends

Emf induced is similar to that of a battery

Emf passes through the conductor

Both A and B

None of these

A force of 5 n is acting Y-axis. Its component along X-axis is:

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7 N

5 N

Zero

10 N

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