Question # 1

The rage of change of momentum is equal.

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Mass

Force

Weight

None

The deforming force is called _______________

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Stress

Strain

Young's Modulus

Nil

Cos 0°=

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0.5

1

0.866

0

Co-efficient of friction between wood and concrete.

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0.63

0.8

1

0.9

Center of gravity of an irregular shaped body can be found with help of:

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Screw guage

Plumbline

Meter rode

Wedge

Newton's first law of motion is known as law of ___________________

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Force

Inertia

A and B both

None

Birds are able to fly on ____________

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Radiations

Thermals

Air

Layers

Inertia depends upon:

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Weight

Mass

Density

Force

False ceiling is done to

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Lower the height of ceiling

Keep the roof clean

Cool the room

Insulate the ceiling

Plasma is in ___________ form.

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Moleculer

Kinetic

Static

Ionized

The kinetic energy of the body of mass 1000 kg moving a speed of 20 ms^-1 will be:

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2 x 10² J

2 x 10³J

2 x 10⁵J

2 x 10⁸J

Which statement of the following is false for primary memory?

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The base of primary memory is electronics

This is a random access memory

It gets lost when computer switches off

It is built on laser technology

Mathematical formula of spring constant is:

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F/x

X/F

F/t

F/m

If we double both the current and the voltage in a circuit while keeping its resistance constant, the power:

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Remains unchanged

Halves

Doubles

Four time

Specific resistance of silver = ________ x 10^-sOhm-meter

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5.25

2.75

1.69

1.62

The negative sign with induced emf in Faraday's law is in accordance with

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Lenz's law

Amperes law

Boyle's law

Gauss law

In three phase voltage across any two lines is about.

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220 V

230 V

400 V

430 V

Domains are existed in

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Ferromagnetic materials

Paramagnetic materials

Semi conductors

Diamagnetic materials

Unit of decay constantλ is:

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ms

m^-1

m

S^-1

An ammeter is an electrical instrument which is used to measure.

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Voltage

Current

Resistance

None

The binding energy for_________ is maximum.

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Copper

Glass

Iron

Aluminum

The resistivity of two wires isρ₁ andρ₂ which are connected in series. If there dimentions are same then the equivalent resistivity of the combination will be:

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(ρ₁ +ρ₂)

1/ρ₁+ 1/ρ₂

ρ₁+ρ₂/2

ρ_1/ρ₂

Which one of the following resistance is used to convert a Galvanometer into an ammeter.

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High resistance

Low resistance in series with galvanometer

Shunt

High resistance in series with galvanometer

Which one is not present in A.C. generator.

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Armature

Magnet

Slip rings

Commutator

Binding energy per nucleus for uranium is above:

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6.7 Mev

7.7 Mev

6.9 MeV

7.9 MeV

When the K.E. of photoelectric is zero, the frequency of incident photon is.

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Less than

greater than

Equal to

Much greater

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