Question # 1

A sugar bag of 1 kg has a momentum 25 kg m/s than its velocity is :

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v = 20 m/s

v = 25 kg

V = 25 m/s

v = 25 kg/ms-1

The velocity of bodies falling down

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Dwscreses

Increases

Zero

Constant

The value of G is _________ every where:

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Same

Varying

Changing

1.62

A body has mass 986 Kg than W = ............... .

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9860 kg

9860 N

9860 m/s2

Nil

The slope of distance time graph shows.

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Speed

Displacement

Acceleration

Distance

When a hammer raised up its energy will be:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

Significant figures in 0.0010 are.

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One

Two

Three

Four

Unit of pressure is :

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N/ m

Pa

N

m/N2

Mercury is used as thermometric material because it has

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Uniform thermal expansion

Low freezing point

Small heat capacity

All the above properties

The motion of a body about an axis is called.

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Random motion

Vibratory motion

Rotatory motion

Circular motion

For balancing the beam balance, pointer must be at.

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Extreme position

Zero

The right side

The left side

Electric potential is a quantity:

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Scalar

Vector

Base

All

Current is equal to:

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IR²

CV

Q/t

IR

In mathematical form of Ohm's law, "R" is:

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Resistance

Specific resistance

Resistor

Resistivity

Time period is reciprocal of:

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Frequency

Cycle

Wavelength

Amplitude

The output of a two input NOR gate is 1 when:

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A is 1 and B is 0

A is 0 and B is 1

Both a and b are 0

Both a and b are 1

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

The presence of fish by the other fish can be detected by:

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Magnetic field

Electric field

Gravitational field

All of above

The speed of sound in air at 100°C is:

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380ms-1

382ms-1

386ms-1

300ms-1

After refraction from a convex lens, rays of light parallel to the principal axis converge at a point, this point of convex lens is called:

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Principal focus

Pole

Focal length

Optical center

During S.H.M acceleration of the body is maximum at:

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Mean position

Extreme positions

Between mean & Extereme

None of these

The relation between v,f andλ of a wave is:

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vf=λ

fλ = v

vλ =f

v=λ/f

Energy needed to produce an electron hole in solid state detector is.

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1 to 2 eV

3 to 4 eV

6 to 7 eV

8 to 9 eV

Reflecting mirrors in laser is used to

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Further stimulation

For producing more energetic lasers

Both (a) and (b)

None of these

X=A+B is the mathematical notation for.

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OR gate

NOR gate

NAND gate

AND gate

The movement of conductor in magnetic field produces electrical current was discovered in:

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1931

1731

1842

1831

The jerks in D.C. motor are created by the use of.

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Armature

Commutators

Split rings

Source of emf

To convert a galvanometer into an ammeter, we connect with it a

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Shunt resistance

Low value parallel

Low value by pass resistor

All of above

The value of Rydberg constant is:

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1.0749x10⁷m^-1

1.0974 x 10⁷ m^-1

1.974 x10⁶m^-1

1.0974 x 10^-7 m^-1

The free electrons experience force.

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In direction of -E

In direction of E

Both A and B

All of the above

The condition of resonance is:

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XL = 1/2 Xc

X_L = X_c

X_c = 4_x2

None of above

A moving charge is surrounded by:

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2 Fields

3 Fields

4 Fields

None of these

Curie temperature is

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Differen for chromium oxide and cobalt

Same for chromium oxide and cobalt

Same for iron and cobalt

None of these

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