Question # 1

Speedometer measures the.

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Acceleration

Velocity

Speed

All of these

It is easy to turn a steering wheel by applying a:

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Torque

Force

Couple

Momentum

Significant figures in 0.0010 are.

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One

Two

Three

Four

Kinetic and potential energy are the kinds of energy:

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Chemical

Nuclear

Light

Mechanical

Formula of weight is derived from which law?

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First law

Second law

Third law

Law of conservation of momentum

Ships and submarines float partially or completely according to:

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Newton's law

Pascal's law

Principle of floatation

None

Atmospheric pressure will increased if we move on earth:

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Upward

Downward

Left

right

When a substance is changed from its solid state to liquid state by adding heat, the process is called

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Melting

Fusion

Freezing

A and B both

Which of following units is equal to Kgm² s^-2

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Newton

Joule

Watt

Coloumb

Displacement is a quantity.

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Scalar

Vector

Both a and b

None of these

If the velocity of the body becomes double then its kinetic energy will:

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Remain the same

Become double

Become four times

Become half

The unit of (ρ) in formula R=ρ.L/a is______________.

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Ω

Ω-m

Ω-m²

Ω-m^-2

In there is no extension in the spring then this positon is called

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Equilibrium position

Unequilibrium

Nautral equilibrium

Stable equilibrium

Mathematical formula of spring constant is:

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F/x

X/F

F/t

F/m

If the distance between the charged bodies is much greater as compared to their sizes then the bodies are considered is:

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Positive charge

Negative charge

Point charge

Zero charge

What is the power rating of a lamp connector to a 12 V source when it carries 2.5 A:

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4.8W

14.5W

30W

60W

To hear echoes, the minimum distance of the obstacle from source of sound should be:

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10m

15m

17m

20m

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

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Resistance

Specific resistance

Resistor

Resistivity

One micro coulomb charge is equal to:

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10^-3 C

10³C

10⁶C

10^-6C

The unit of power is _________

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Volt

Watt

Joule

Coulomb

1 KB =______________

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1022 bytes

1023 bytes

1024 bytes

1025 bytes

The speed of waves can be calculated by:

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Vt

d x t

f λ

Tf

The diver spin faster when moment of inertia becomes.

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smaller

Greater

Constant

Equal

Light waves are

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Longtail waves

Transvers waves

Stationary waves

Mechanical wave

The resultant of two forces 3 N and 4 N acting at right angle to each other is

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7 N

5 N

4 N

1 N

Which one of the following is into directed along the axis of rotation

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Angular acceleration

Angular momentum

Centripetal acceleration

Angular displacement

In stationary waves the points which always remain at rest are.

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Nodes

Antinodes

Crest

Trough

Angular acceleration is produced by

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Power

Torque

Pressure

Force

The amplitude of a vibrating body at resonance in vacuum is

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Minimum

Maximum

Zero

Infinite

Dot product of two non zero vectors is zero it angle between them is.

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30^o

60^o

45^o

90^o

One radian is equal to.

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75.3^o

57.3^o

35.7^o

73.3^o

If r = 5 m and f = 4 N are along same direction, them torque is

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20 Nm

5 Nm

10 Nm

Zero

Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

Which is not characteristic of Laser.

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Monochromatic

Coherent

Intense

Multi direction

The input resistance of an op amplifier is.

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Low

High

Zero

Equal to output resistance

If F1 and F2 are teh magnetic forces acting on a particle and electron respectively when moving perpendicular to the magnetic field then.

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F1=F2

F1>F2

F1<F2

F1 = 4F2

The reactance of inductor depends upon

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L

All of the above

A capacitor is perfect in insulator for.

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Alternating current

Sparking current

Eddy current

Direct current

Compton's effect is associated with

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gamma rays

Beta rays

X rays

Positive rays

Lenz's law presented in

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1834

1934

1826

1836

At resonance frequency, the impedance of RLC series circuit is.

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Maximum

Minimum

Zero

Infinite

The first atomic reactor was introduced by

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Currie

Enrico Fermi

Newton

Bohr

Iodine -131 is used for the treatment by

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Bones

Eyes

thyroid glands

Lungs

Impedance is denoted by:

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A

Z

P

Q